Kingdom Hearts/Neverland

Neverland is a world based on the 1953 Disney movie Peter Pan. Despite the world's name, you don't actually get to go to the islands of Neverland. Instead, most of the world is spent on Captain Hook's ship.

The Rescue
When taking the Gummi Ship route to Neverland, the Gummi Ship will come across what looks like a pirate ship. After a long cutscene where Sora is once again reunited with Riku, the party ends up in the Ship Hold. After another cutscene, you'll be able to add Peter Pan to your party. Your new mission will be to find Wendy and Kairi. Exit the area through the door to bump into Shadow Sora, the Heartless Riku introduced earlier. After he leaves, climb up the ladder and enter the door on your right. Go down the ladder here to enter another short battle with Shadow Sora. Now exit the Freezer by climbing up the ladder for a long cutscene. The party locates Wendy and Kairi only for them to be taken away shortly after their arrival. Go through the door and, once again, battle Shadow Sora. Go through the door next to the ladder for another battle with Shadow Sora. Jump up on the shelf to reach the roof above. Where the net is torn you'll be able to jump up to the next floor. Make sure to jump through the opening on the right. In this room, make sure you have Sora, Donald, and Goofy in your party, since you'll need to activate the Trinity mark. Climb up the ladder that's brought down for a cutscene. Sora didn't seem to make it in time, as Riku is leaving with Kairi. He summons an AntiSora Heartless, which serves as your next boss.