On a stormy night a girl called Apis escapes from the Marines and arrives at Straw hat's ship, but the girl upon knowing that they are pirates begins to hide some of the reasons which she is being wanted by the Marines. As the Straw Hats escape from the Marines, they get caught in the Calm Belt.

After escaping the clutches of the Marine fleet, the Straw Hats soon find themselves in an equally dangerous predicament - stranded in the Calm Belt!

The Straw Hats want to return Apis's dragon to his nest, but the Marines have them surrounded. Looks like it's time for another daring escape!

Even for Nami, finding the dragon's lost island proves to be tougher than looking for a needle in a haystack - or at the bottom of the ocean.

Zoro is left fighting with Eric while Luffy and the gang run to the ship in order to get to Lost Island, but only find more problems.

At last Admiral Nelson has seen through the ambitions of Eric, but takes it a little too personally and now the mystical dragon's life is in danger.

With his last breath, Ryuuji calls all his fellow dragons, and the Lost Island re-surfaced. Meanwhile Luffy takes out Admiral Nelson and his gang.

After leaving Warship Island the Going Merry is now towards the Grand Line, and the crew now returns to the Great Adventure.