One Piece, Vol. 18

Monkey D. Luffy always dreamed of becoming the King of Pirates, but he accidentally gains the power to stretch like rubber at the cost of never being able to swim again, so now Luffy, with the help of pirate wanabees, sets off in search of One Piece--the greatest treasure in the world.
When Monkey D. Luffy accidentally gains the power to stretch like rubber at the cost of never being able to swim again, he and his crew of pirate wannabes set off in search of the "One Piece," the greatest treasure in the world.