After beating Pinstripe, Sora, Kairi, Crash, Coco, Aku Aku, Pikachu, and Angel left the plant to make their way towards the next island.

Meanwhile, over to Castle Cortex, Dr. Cortex had gotten word about Pinstripe's defeat.

"Gah! This is ridiculous! Can nothing stop them?! Those Heartless couldn't cut it, and my creations couldn't bring them down, so I got nothing left to work with!" Dr. Cortex angrily exclaimed.

"Having some problems, doctor?" Ganondorf asked from behind. Cortex turned around and saw Ganondorf. He walked up to him.

"You again! The Heartless you've provided for me are utterly useless! They couldn't stop those two kids and the bandicoots that got away from me!" Dr. Cortex said.

"Calm down. All is still not lost. The only way to assure our victory is by getting to the Keyhole before they do. Only then, will this world be yours," Ganondorf said.

"The Keyhole, yes. If only we know where it is," Dr. Cortex said.

"Speaking of which, how is the progress of the search?" Ganondorf asked.

"My scientists are already looking for it. I still don't get why it's so important," Dr. Cortex said, making Ganondorf groan.

"If you would pay attention for more than a second, I wouldn't be reminding you that the Keyhole is the heart of your world, and you control the world when you control the heart," Ganondorf explained.

"Oh, right. And I get a seat at your table, like you promised," Dr. Cortex said.

"All in due time," Ganondorf said, taking his leave. He returned to Hollow Bastion and he growled. "What an imbecile."

"I wasn't so sure about him. At least the scientists working under me are competent," Giovanni said.

"I wasn't either. I am more than certain that Sora, Kairi, their Pokémon, and his two creations will find the Keyhole and seal it. Dr. Cortex's foolishness will ultimately be the source of his eventual downfall. We still have other matters to attend to," Ganondorf said.

Just then, a robot stepped forward. The robot possesses a bald human head with a gem in his forehead and a cleft chin. His eyes are light blue. He has a green chest with a red jewel on the left side of his chest. He also has large hands. He has scars over his eyes and spiked bracelets on his wrists. He also has brown boots attached to his black legs. His knees are spiked. He has a saber on his left.

The other is a purple skinned lady pirate wearing a large pirate hat with a skull symbol, with purple hair. She wore a purple necklace with a gold pendant around her neck, gold earrings, a bikini top that looks like the upper half of a skull, deep purple pants lined with a white rim that looks like a jaw bone and a brown belt which holds a scimitar and a pistol.

"Yes, the princesses," the robot said.

"We only need four more of them to make our plan for the door to darkness to open and take over all the worlds," the lady pirate said.

"Cortex's defeat will have no effect on the plan, but we must find the remaining princesses before Sora and Kairi ruin everything," Ganondorf said.

Back on the N. Sanity Islands, Sora, Kairi, Crash, Coco, Aku Aku, Pikachu, and Angel arrived at the final island and they're just outside of Castle Cortex.

"Is that the place? Is that Cortex's castle?" Kairi asked.

"Yeah, it is. Cortex is in there, and that's where he's holding Tawna," Coco said.

"And that's where the Keyhole is likely in," Sora said.

"We must enter the castle and find this Keyhole, rescue Tawna, and save the islands," Aku Aku said.

With that said, they entered the castle. Upon entering the castle, they came across Shadows, Soldiers, Large Bodies, and Robot Soldiers. They engaged the Heartless and moved on once they were taken out of the way. Just then, a large mechanical arm slams on the floor in front of them. They saw a rather large robot with Dr. N. Gin operating it.

"Welcome to Castle Cortex, bandicoots and brats. We have been expecting you," Dr. N. Gin said.

"And who are you?" Sora asked.

"Pika?" Pikachu asked.

"I am Dr. N. Gin. Dr. Cortex wanted to greet you himself, but something came up in the upper levels, so he sent me in his stead, so you took the trouble to get here, so I thought I'd offer you some hospitality. How would you like some punch?!" Dr. N. Gin asked in a pun. The robot attempts to punch them, making them scatter. Sora and Kairi summoned their Keyblades and engaged N. Gin. A hole on one of the mechanical hands opened and a rocket was launched at them. They dodged the rocket, making it explode upon contact. "Hold still so I could blow you up into smithereens!"

"Not gonna happen, motor mouth!" Kairi said, casting a thunder spell and hitting him. Angel fired Swift at the robot as Pikachu fired Thunderbolt. Crash and Coco slipped out of the robot's fists from left to right.

"Try dodging this!" N. Gin said with his robot firing a laser. Sora threw his Keyblade, striking N. Gin. "Ow! Oh, you will pay for that, you little bug!"

"Would you take a check?" Sora asked, casting a fire spell, hitting him.

"Yeow! That's hot!" N. Gin exclaimed. Crash jumped up and gave him a spinning kick. "Ouch! Get off my cockpit!"

During the fight, Sora saw Coco on her laptop.

"Coco, this isn't really the time to be checking emails," Sora said.

"I'm not checking anything, Sora. I'm hacking into N. Gin's robotics. I thought I would upload a computer virus into his robot while you kept him busy," Coco said.

N. Gin shook Crash off, but then, his robot started to malfunction for some reason.

"What is going on?! Why is it acting funny?" N. Gin asked.

"Warning: Abnormality detected. Computer virus infection," a computer voice said.

"A virus?! There can't be a virus! I have taken every precaution to prevent viruses! No matter! Better fire the secret weapon. Computer! Fire Bandicoot Killer Bombs!" Dr. N. Gin said.

"Cannot comply. No sufficient power to activate," the computer said.

"Just do it!" Dr. N. Gin demanded.

"Cannot comply," the computer said.

"Fire the bombs now, you stupid bucket of bolts!" Dr. N. Gin demanded.

"It's your funeral," the computer said. The robot took out a bomb with Crash's face in a block sign, but the timer starts running from 5 seconds.

"Say goodbye, good guys," N. Gin said before the bomb explodes and he crashes through the ceiling, screaming.

"Uh, goodbye," Sora said.

"Pikachu," Pikachu said.

"And I thought Team Rocket had an act of blasting off whenever they've lost," Kairi said.

"Eevee," Angel said.

Back in Pallet Town, Jessie sneezed.

"Do you get the feeling that someone is talking about us?" Jessie asked.

"Jessie, this isn't one of those anime that have characters that sneezes whenever someone mentions them," James said.

"Just a feeling I had in my bones," Jessie said.

"All the bones except for the skull because it's as thick as a Snorlax's body fat," Meowth said. Jessie just grabbed Meowth by the head and made him face her.

"Care to repeat that, Meowth?" Jessie hissed.

"I didn't say anything," Meowth said.

"Thought so," Jessie said, dropping him.

"At least I didn't make any comments about Jessie's big boobs, otherwise, I would be in for something worse than that time I ate Jessie's makeup by mistake or when I tossed James's bottle cap collection into a fountain just to make a wish," Meowth said in his thoughts.

Back to Dr. Cortex's castle, Sora, Kairi, Crash, Coco, Aku Aku, Pikachu, and Angel fought their way through the castle halls against anything that came their way. They made their way outside in the rain. There were some prisoners trying to reach out for freedom. When they grab Pikachu or Angel, they've earned a bite, making them yelp and back away. They saw a hole in the wall ahead of them.

"There's a way back inside," Coco said.

"Let's get out of this rain!" Kairi said.

"Eevee!" Angel said.

With that said, Sora, Kairi, Crash, Coco, Aku Aku, Pikachu, and Angel ran towards the hole and back inside the castle. Upon entering, they've found themselves in a laboratory with all sorts of chemicals and formulas. And there was Dr. N. Brio waiting for them. He grinned before he laughed maniacally.

"Welcome. I have been expecting you," Dr. N. Brio said.

"Who are you?" Kairi asked.

"I am Dr. Nitrus Brio. Chemist and evil scientist extraordinaire! Dr. Cortex was utterly displeased by how you disposed of the super soldiers that he and I created for world domination!" Dr. N. Brio said just before he laughed again.

"Yeah, well, not everyone likes what you're doing, doc!" Sora said, summoning his Keyblade. Kairi summoned hers as Crash, Coco, Pikachu, and Angel got ready to fight.

"Ah, so it's a fight you want, is it? I can oblige you with that, my boy. And I can whip up some playmates to entertain you!" Dr. N. Brio said, taking two beakers of chemicals and he mixes them up. He tosses them and he creates green sludge monsters. "Come, my children! Destroy those children, bandicoots, and those creatures!" The sludge monsters snarled and hissed as they started to attack the group.

"They're no Heartless, but they're just as bad," Sora said.

"Chu," Pikachu said as Crash nodded.

"Heartless or not, we gotta take them down," Sora said.

With that said, Sora, Kairi, Crash, Coco, Pikachu, and Angel engaged the sludge monsters as Dr. N. Brio threw some red potions, making them explode upon contact to the ground. Crash jumped on one and it squirts back at N. Brio. He yelped as he wipes the green sludge off him. Sora cuts through one as Kairi casts a blizzard spell, freezing it. Coco jumps on another one, making the sludge monster, making it squirt at him. Pikachu and Angel took out some of the sludge monsters with Iron Tail.

Once the last of the sludge monsters were disposed of, Dr. N. Brio continues to throw red potions at them, making them dodge. Sora and Crash then rushed at N. Brio and push him down to the ground.

"Not too bad, but it's not over yet!" Dr. N. Brio took out another potion, but it was a darker shade of green and has a skull label on the side. "I'm going to teach you some respect!" He drinks the potion. He then begins to transform into a large, green, hulking monster. He roars as he pounds on his chest like a gorilla.

"Oh, that's not fair," Sora said. He then begins to pound on the floor, making the debris of the castle fall off, making Sora, Kairi, Crash, Coco, Aku Aku, Pikachu, and Angel dodge the falling blocks. "Fairness is overrated though."

"Chu," Pikachu said.

N. Brio keeps on pounding the ground as Sora and Kairi attempts to bring him down, but he blocks and he keeps slamming the floor. Crash then jumped on N. Brio's head, making him stumble backwards. He then fell out the window. He flapped his arms in an attempt to fly back up, but his efforts were in vain when he fell back down again, screaming.

"Well, that takes care of him," Sora said.

"We're so close. Cortex's lab is straight ahead," Coco said.

With that said, Sora, Kairi, Crash, Coco, Aku Aku, Pikachu, and Angel made their way towards Cortex's lab and they begin to launch their attack on the lab. The scientists tried to stop them, but they were easily overpowered when Pikachu gave them a shock of Thunderbolt. Heartless appeared and attacked, but Kairi casts a magnet spell and pulled them in. She then finished them off with a thunder spell.

Meanwhile, Cortex is preparing his hovercraft when he hears the commotion.

"What is going on in there?!" Cortex asked.

"Apologies, doctor, but the bandicoots and the key-bearing children have made it past our forces and destroying the laboratory as we speak," a scientist reported.

"N. Brio, N. Gin, you've failed," Dr. Cortex growled. He gets out a laser gun. "Do I have to do everything myself? It was bad enough that my Evolo-Ray failed to work on him, but now he's back along with Coco, and he brings those two with him and they ruined everything! Not this time."

Back in the lab, the raid on the lab continues as Pikachu fired Thunderbolt on the machinery. Kairi uses her Keyblade to unlock the cages in the lab, allowing the animals to make their escape.

"Go, you're free!" Kairi said.

The animals stampede their way out of the lab. A scientist ran as the animals ran over him. He limply lifts himself up, covered with animals footprints.

"I should have listened to my mother and became a florist like she wanted," the scientist said.

Kairi then makes it over to Tawna's cage and Kairi unlocked it.

"Thanks for letting me out," Tawna said.

"You're welcome," Kairi said.

"Tawna, it's good to see you again," Coco said.

"Coco, so you did get out after all. And Crash too!" Tawna said, walking over to him and picked him up in her arms, giving him multiple kisses. She leaves lipstick marks on his face.

"Look, Tawna, was it? Where's Cortex?" Sora asked.

"I don't know. He and those other two stepped out just before you got here. He said something about a Keyhole," Tawna said.

"That's what we're looking for," Kairi said.

"It should be somewhere in the castle," Sora said.

"We'll have to find it and deal with Cortex," Coco said.

With that said, Sora, Kairi, Crash, Coco, Tawna, Aku Aku, Pikachu, and Angel started with the lab, searching for the Keyhole.

The lab was totalled, but Crash spotted a purple blimp outside. He whistled, getting their attention.

"What's up, Crash?" Sora asked. Crash points outside and saw the blimp. "Is Cortex on that thing?"

"Then he's trapped," Kairi said.

"Then we can get him," Sora said.

"Pikachu," Pikachu said.

With that said, Sora, Kairi, Crash, Coco, Aku Aku, Pikachu, and Angel head out to the great hall and they spotted a rope connected to the blimp. They crossed the rope and right to the top of the blimp.

"Where is he?" Sora asked.

"Right here!" Cortex said, hovering around. He laughed evilly. "Crash Bandicoot, you've been a very bad boy for running away the way you did. But you made up for it by bringing the two Keyblade holders to my front door."

"Let me guess. Ganondorf has you doing his dirty work, too, huh?" Sora asked.

"You could say that. But why talk about the boring details when I can simply turn you all into a pile of smoldering ashes and start all over with my plans for world domination?" Dr. Cortex asked. He took out his laser gun. "Get ready to be vaporized!"

He fired his laser gun at them, so they dodged the laser fire, so Crash and Coco deflected the green lasers and they hit him. Sora and Kairi even uses their magic to hit him. Pikachu and Angel fired Thunderbolt and Swift at Cortex, hitting him. Cortex keeps on firing the lasers, so Sora deflected the laser fire with his Keyblade, hitting him. Crash then gave the finishing blow. Cortex's hoverboard explodes and he begins falling, screaming.

"That takes care of him," Sora said. Just then, the Keyhole revealed itself before them, so Sora aims his Keyblade at the Keyhole and seals it. A locking sound is heard.

With their mission accomplished, Sora, Kairi, Crash, Coco, Tawna, Aku Aku, Pikachu, and Angel exited the castle. Sora, Kairi, Pikachu, and Angel stood before the mask and the bandicoots.

"Now that the Keyhole is sealed, this world shall be safe," Aku Aku said.

"So now what?" Coco asked.

"Well, Kairi and I will be heading back to our ship and setting off back to our adventure," Sora said.

"So this is going to be goodbye," Kairi said.

"I suppose, but I hope we get to hang out with you again when you come back," Coco said.

"Sure," Kairi said.

"We'll be off," Sora said.

With that said, Sora, Kairi, Pikachu, and Angel waved goodbye to Crash, Coco, Tawna, and Aku Aku as they took their leave of the N. Sanity Islands. They entered their Gummi Ship and departed to their next destination. That'll be all for now.