As the Rangers fought Bigs and Bluefur, Robo Knight fought Hisser. Bigs and Bluefur eventually retreated. Hisser: "Slitter spin!" Hisser spins into Robo Knight and knocks him hard. Robo Knight crashes into a building and parts of it fall on top of Robo Knight, burying him. Hisser: "Looks like my slitter spin move spelled the end of you metal man!" Robo Knight knocks the rubble away as he stands up. Robo Knight: "Negative!" Hisser is surprised. "What?" Robo Knight: "It is time to neutralize you!" Robo Knight pulls out his morpher and places the power card inside it. Robo Knight: "Vulcan Cannon! Activate!" Gosei: "Summon Vulcan Cannon!" The Vulcan Cannon arrives and Robo Knight attaches it to his Robo Blaster. Robo Knight: "Vulcan Cannon! Knight Dynamic! Activate! Reaching full power! Apply maximum force!" Hisser: "Hey, wait!" Robo Knight: "Knight dynamic! Fire!" Robo Knight fires the Vulcan Cannon at Hisser. Hisser is hit and falls to the ground in flames. Robo Knight: "Threat eliminated." Zombats arrive and Hisser is revived. The battle between Robo Knight and Hisser continues. Robo Knight transforms into Lion mechazord and eventually destroys Hisser.
The Rangers were battling Psychotick when suddenly Lion Mechazord streaked past them. Red Ranger: "Robo Knight!" Psychotick: "Now for the main event!" Lion Mechazord transformed into Robo Knight. Red Ranger: "Good timing Robo Knight!" Blue Ranger: "He's tough, but together we can take him." Robo Knight: "I will handle it alone." Psychotick: "Let's see you handle this!" Psychotick charges towards Robo Knight. Psychotick: "I've been itching to fight you!" Robo Knight and Psychotick fight. Robo Knight lands a kick that knocks Psychotick to the pavement. Psychotick quickly gets back up. Psychotick: "Tick attack!" Robo Knight leaps out of the way, leaving a family behind him vulnerable. Red Ranger: "No! Guys quick!" The Ranger pull out their Mega Blasters and fire, destroying the tick attack before it reaches the family. The Rangers run over to the family. Red Ranger: "Hey, Robo Knight put those people at risk! Let's get them to safety." The Rangers guard the family. Yellow Ranger: "What's the deal Robo Knight? You left them wide open." Robo Knight: "The monster is my target." Red Ranger, Pink Ranger, and Blue Ranger have their Mega Blasters drawn. In addition to the Mega Blaster, Yellow Ranger has her Tiger Claw ready and Black Ranger has his Snake Ax ready. Pink Ranger: "Quick! Get out of here!" The family quickly runs away. Robo Knight and Psychotick continue to fight. Robo Knight lands several punches onto Psychotic. Black Ranger notices a couple hiding behind a bench. Black Ranger: "More people." Black Ranger runs over to the bench just as Robo Knight knocks Psychotick to the ground. Psychotick quickly gets up. Psychotick: "Tick attack!" Once more, Robo Knight leaps out of the way. Black Ranger: "Why aren't you protecting those people?" Black Ranger races over to the bench and blocks the tick attack with his Snake Ax. Black Ranger jumps over the bench. Yellow Ranger joins him as they ushered the couple to safely. Black Ranger: "You two get going! Move! Come on ! Go!" Robo Knight continues to fight Psychotick. Robo Knight: "Robo Blade!" Robo Knight strikes Psychotick several times with the Robo Blade, eventually knocking him to the ground. Robo Knight: "Robo Blaster! Vulcan Cannon! Act....I've been hit!" Psychotick: "Got him! Tick attack!" A tick lands on Robo Knight. Robo Knight: "No! An energy tick!" Psychotick: "Activate!" Robo Knight vanishes just as the rest of the Rangers race up. Elsewhere, Robo Knight slowly comes to. His vision is a little blurry. Robo Knight: "Rebooting." His vision clears, and Robo Knight discovers he is inside a cage. Robo Knight: "Calibrating sensors. Scanning for possible escape. Searching." Vrak watches him for a moment. Vrak: "For now you're my guest Robo Knight." Robo Knight: "You are interfering with my mission." Vrak holds up Robo Knight's morpher. Vrak: "Such an interesting device. It tells me your fuel cell is almost half empty. And you'll lose more since that cage is more than just a prison." Psychotick walks up. Psychotick: "Yes! It also drains your power. Soon you will be too weak to defend yourself." Robo Knight: "I will break these bars." Robo Knight grabs the bars and tries to bust them open. Vrak: "The harder you try to escape, the faster that tick will drain your energy. And the Rangers won't help you. They saw how you endangered humans. And since you don't care about them, they won't care about you. Now it's time for phase two of my plan." Vrak walked over to Psychotick. Vrak: "I need you to keep those Rangers occupied while I finish reprogramming our friend here." Psychotick: "With pleasure." Robo Knight continued to try and break free but he felt weaker. Robo Knight: "Power...too low." Vrak had been watching him. Vrak: "And once it's completely gone, you'll be reprogrammed." Robo Knight did not like seeing his morpher in Vrak's hand. Robo Knight: "That morpher belongs to me!" Robo Knight tried once more to break free. Vrak: "Impressive. Even with almost no energy left, you continue to fight back to save the Earth. And now not even the Rangers will save you." Vrak laughed. He was unaware that Troy had arrived. Troy: "Wrong Vrak! Now let Robo Knight go!" Robo Knight: "Red Ranger?" Vrak turned around and faced Troy. Troy: "We humans never abandon our friends." Robo Knight: "Never abandon friends." Vrak: "There's your weakness. That you protect each other and he's not even one of you. Anyway, you're too late. Soon Robo Knight will be reprogrammed and you're not strong enough to fight me alone." Vrak laughed. Vrak: "And he's too weak to do anything at all." Robo Knight: "Must...protect Earth's...environment." Troy: "I'm never really alone. We're all here for each other. And I'm here for our friend!" Troy pulled out his morpher. Troy: "It's morphin' time! Go Go Megaforce! Megaforce Red!" Vrak: "You fool!" Red Ranger fought Vrak with his Dragon Sword. Vrak knocked Red Ranger to the ground. Vrak: "Time to end this!" Vrak started to charge towards Red Ranger, but then skidded to a stop when Psychotick appeared. Psychotick: "Master Vrak!" Vrak: "What is it?" Psychotick: "The other Rangers are occupied and I'm all charged up and ready to take this red one down for good." Suddenly the rest of the Rangers arrived. Black Ranger: "Hold it right there Vrak!" Yellow Ranger, Pink Ranger, Blue Ranger: "Troy!" Vrak: "I thought you took care of them." Psychotick: "Well...I" The four Rangers raced over to Red Ranger's side. Black Ranger: "We got here as fast as we could." Red Ranger: "I knew you would find me." Vrak glanced over at Psychotick. Vrak: "Useless fool!" The Rangers fought Psychotick and Vrak. Robo Knight watched the fight from his cage. Robo Knight: "The others...they came too. But why? I need to help, but my energy's almost fully drained." Black Ranger and Yellow Ranger broke away from the fight and raced over to Robo Knight's cage. Black Ranger: "Robo Knight! We'll get you out. I may not like some of the things you've done, but Troy trusts you." Yellow Ranger: "We're not just going to leave you in there." Robo Knight: "No. Risking lives for me is illogical. The mission is to protect the Earth." Black Ranger became frustrated. Black Ranger: "Don't you see? We're all on the same team. We're all trying to save the Earth." Robo Knight: "Team?" Yellow Ranger: "It's simple. We're the good guys, and they're the bad guys. We help each other." Robo Knight: "Good guys?" Black Ranger stood up and swung back his snake ax. Black Ranger: "Stand back." Vrak: "Rangers!" Before Black Ranger could strike, both Black Ranger and Yellow Ranger were struck with a powerful blast and knocked off their feet. Robo Knight: "No!" Vrak: "Oh good, I have your attention. Now you can witness the end of the Power Rangers." Behind Vrak, Psychotick has Red Ranger under his foot and a strong grip on Pink Ranger and Blue Ranger. Robo Knight slams his fist onto his knee. Robo Knight: "No power to help them!" Vrak: "No indeed. And now because of you, the Power Rangers are finished." Yellow Ranger struggled to get back up and glanced over at Black Ranger. Yellow Ranger: "You okay?" Black Ranger tried to get back up, but stumble back onto the ground. Black Ranger: "Not really." Vrak: "It's over Rangers." Blue Ranger: "No way! We'll never give up." Vrak: "Oh no?" Black Ranger: "Nope, we're doing great." Pink Ranger: "As long as we're united, there's always hope." Red Ranger: "The world is counting on us. We will find a way to defeat you." Robo Knight: "Find a way." Robo Knight comes up with an idea. Robo Knight: "Yes!" Robo Knight slowly stands up and is confident he can carry it through. Robo Knight: "I can do this. Yes, trace the power drain. Rerouting energy back to power cell. Execute!" Robo Knight used all his power, which caused an explosion and broke him from his cell. Black Ranger: "Whoa!" Yellow Ranger: "Nice!" Vrak is in disbelief. Red Ranger shouts, he's free! Black Ranger adds, and he's mad. Robo Knight charges towards Vrak. Robo Knight knocks Vrak and Psychotick off their feet. Robo Knight holds out his morpher and notes, power is back at full capacity. Vrak shouts no as he and Psychotick struggle to get back up. Robo Knight states, I am a protector of the Earth. You and all threats to the environment will be eliminated. Psychotick gloats, bet you can't take us! Robo Knight warns them, prepare for destruction. Red Ranger states, I knew he was one of us as he and the rest of the Rangers get back up on their feet. Robo Knight pulls out his Robo Blaster. Psychotick tells him, I've sucked up too much power for you to stop me now! Psychotick launches a tick attack. Robo Knight fires his Robo Blaster and destroys the attack and hits Psychotick. Vrak manages to leap out of the way. Robo Knight fires several times at Psychotick. Robo Knight charges towards Vrak with his Robo Blade. Robo Knight fights Vrak with his Robo Blade. Vrak is confident that Robo Knight cannot stop them. Robo Knight leaps into the air and then comes down, striking a powerful blow against Vrak with his Robo Blade. Vrak is knocked off his feet and rolls onto the ground. Psychotick runs over to Vrak as Robo Knight pulls out his morpher and inserts the Vulcan Cannon power card. The Vulcan Cannon arrives and Robo Knight places it onto his Robo Blaster and aims towards Vrak and Psychotick. Robo Knight fires the Vulcan Cannon and it hits both Psychotick and Vrak. Once more, Vrak is knocked off his feet. But Psychotick is defeated. Vrak vows, you will pay for this. Big time! Vrak summons the Zombats and vanishes. The Zombats arrived and revived Psychotick and make him giant size. Psychotick notes, he wasn't kidding when he said big time. Red Ranger is ready to summon the Megazord, but Robo Knight stops him. He tells Red Ranger, I will handle this. There is a glow and three power cards leap into Robo Knight's hand. Robo Knight states, time to deploy my zords. Pink Ranger is very excited. Great! Twelve Mechazords together! Robo Knight replies, mine will be sufficient. Robo Knight places the Knight Brothers power card into his morpher and activates them. The Sea Lion Mechazord and Sky Lion Mechazord quickly arrive. Psychotick is not happy. Nonsense! I'm putting my foot down! On your heads! The Rangers quickly back up. Sea Lion Mechazord and Sky Lion Mechazord fly over the Rangers and then strike Psychotick hard. The five Rangers are impressed. The two mechazords fire at Psychotick. Robo Knight transforms into Lion Mechazord and eventually Gosei Grand Megazord. Psychotick is destroyed by Gosei Grand Megazord.
Robo Knight was battling Shadow Serpent. He fought him with his Robo Blade. Shadow Serpent tries to strike Robo Knight with a spear, but Robo Knight knocks it away. Robo Knight fires his Robo Blaster several times at Shadow Serpent. Shadow Serpent is hit hard and falls to the ground. Robo Knight activates his Vulcan Cannon and fires it at Shadow Serpent. Shadow Serpent is defeated. The Rangers race towards Robo Knight. Robo Knight admits Red Ranger's plan worked. There is true power in teamwork. Shadow Serpent pleads to send the Zombats. The Zombats arrive and soon Shadow Serpent is giant size. The mechazords are summoned and the battle continues until Shadow Serpent is destroyed by Gosei Great Grand Megazord.
The Rangers had several battles with No Joke. During these battle, Yellow Ranger, Pink Ranger, Black Ranger, and Red Ranger were pulled into No Joke's pod because of their laughter. Blue Ranger came up with a plan. Blue Ranger started telling jokes with Robo Knight responding seriously. No Joke starts laughing and the pod begins to pull him in. No Joke destroys the pod. All the victims are released. Pink Ranger, Yellow Ranger, Black Ranger, and Red Ranger are released as well. Black Ranger is impressed - they did it. Robo Knight and Blue Ranger walk over to the rest of the Rangers as they get up. Red Ranger reminds them that's it not over yet. Blue Ranger is very pleased with himself. I actually told a joke. No Joke is not happy. No one makes a joke out of me! The five Rangers quickly activate their ultra zords. The ultra zords attack No Joke and then fly over to the Rangers. The Ultra Swords appear and the ultra zords are placed inside and ultra mode is activated. The Rangers charge towards No Joke with their Ultra Swords. No Joke taunts them. Don't make me laugh. You can't beat me. Red Ranger fights No Joke with his Ultra Sword. Blue Ranger and Pink Ranger leap in and strike No Joke several times with their Ultra Swords. No Joke is knocked to the pavement but quickly gets back up. Yellow Ranger and Black Ranger strike No Joke several times with their Ultra Swords. They knock No Joke into the sky. Robo Knight fires his Robo Blaster at No Joke while he is in the air. The Rangers gather together as No Joke falls onto the pavement. The Rangers combined their powers and strike No Joke with the ultra strike. Robo Knight fires his Vulcan Cannon. No Joke is hit hard and falls to the pavement in a blaze of fire. Several Zombats arrive, and No Joke grows to giant size. The Rangers summon their mechazords and the battle continues. Eventually No Joke is destroyed by Gosei Grand Megazord and Sea Megazord.
Black Ranger, Blue Ranger, Red Ranger, and Yellow Ranger are battling Dream Snatcher in the woods. After awhile, Pink Ranger arrives flying on top of Lion Mechazord. Pink Ranger: "Hey Dream Snatcher! We're your nightmare!" As they flew past Dream Snatcher, they struck him. Dream Snatcher hit the ground. Yellow Ranger: "Go Emma! Yeah!" Robo Knight: "Robo Knight! Morph!" Pink Ranger and Robo Knight landed next to the rest of the Rangers. Pink Ranger: "Guys, Robo Knight and I will finish this one. It's over monster! Ultra Sword! Activate! Ultra Mode! Activate!" Gosei: "Ultra Mode! Morph!" Pink Ranger: "Wind Power! Ultra Megaforce Pink!" Robo Knight: "I am Robo Knight. Protector of the environment. Guardian of the Earth." Pink Ranger leaps into the air and strikes Dream Snatcher with her Ultra Sword. Pink Ranger and Dream Snatcher fight. Dream Snatcher blasts Pink Ranger. Pink Ranger goes flying but Robo Knight stops her by pushing her back. Pink Ranger goes flying forward and strikes Dream Snatcher with her Ultra Sword and knocking Dream Snatcher to the ground. Dream Snatcher gets up as Robo Knight charges in. Robo Knight: "Robo Blade!" Robo Knight fights Dream Snatcher with his Robo Blade. Robo Knight: "Vine Bender! Activate!" The vines wrapped around Dream Snatcher and hold him still. Pink Ranger leaps into the air. Pink Ranger: 'Ultra strike!" As Pink Ranger comes down she strikes Dream Snatcher. Pink Ranger lands by Robo Knight. Pink Ranger: "Now to finish this!" Robo Knight: "Knight Dynamic!" Pink Ranger: "Ultra Sky Dynamic!" Pink Ranger & Robo Knight: "Fire!" Together Pink Ranger fires her Ultra Sword and Robo Knight fires his Vulcan Cannon. Dream Snatcher is hit hard and defeated. Within moments, several Zombats arrive and Dream Snatcher grows giant size. The Rangers activate their mechazords, along with the Sky Brothers zords. Robo Knight transforms into Lion Mechazord. Sky Megazord is formed. The Knight Brothers zords arrive and Gosei Grand Megazord is formed. The battle continues. Eventually Dream Snatcher is destroyed by Gosei Great Grand Megazord.
The Rangers were battling Bigs inside the Aurora Box. Robo Knight was battling Bluefur in the city. The Rangers destroyed Bigs with their Ultra Swords. Bluefur is stunned - Bigs destroyed! Robo Knight tells Bluefur he is next. Robo Knight strikes Bluefur with his Robo Blade. Bluefur is hit hard. He tells Robo Knight, this is for Bigs as he tries to strike Robo Knight with his club. Robo Knight blocks the blow with his Robo Blade, causing the blast to strike Bluefur instead. Robo Knight fires his Vulcan Cannon and fires at Bluefur. Bluefur is hit but takes satisfaction in telling Robo Knight that the Rangers will never escape the Aurora Box. Instead Gosei sends the Rangers the Gosei Ultimate Command Ship. With the ship, the Rangers are able to escape the Aurora Box and destroy it in the process. Another battle with Bluefur follows. Bluefur is destroyed by Gosei Ultimate Megazord.
Metal Alice had tried to convince Robo Knight to join their side. Instead Robo Knight decided to stay on the Rangers' side. Robo Knight stands with the Rangers. Robo Knight: "Rangers, let's show them how humans and robots work together." All: "Right!" The Rangers stack their Ultra Swords on top of each other. Robo Knight places his Vulcan Cannon on top of the stack. All: "Knight Dynamic!" Metal Alice: "What's this?!" Robot Knight and the Rangers fire their weapons. Metal Alice leaps out of the way, but Rotox DX gets hit with the full blast. Rotox DX is knocked out of the dwelling. Metal Alice lands on her feet and tells Robo Knight, you made your choice. Metal Alice vanishes. The battle continues outside the dwelling. Rotox DX is destroyed by Gosei Grand Megazord and Gosei Ultimate Megazord.
Prince Takes Knight/Gosei Ultimate