As a child, Monkey D. Luffy dreamed of becoming King of the Pirates. But his life changed when he accidentally gained the power to stretch like rubber...at the cost of never being able to swim again! Years, later, Luffy sets off in search of the "One Piece," said to be the greatest treasure in the world...

Robin and Franky have been captured by CP9 and locked in the courthouse on Enies Lobby. The Straw Hats and Franky's crew must join forces if they want to save their friends. But before they can rescue them, they must face Spandam's six deadly assassins. Can the two groups work together, or will CP9 finally win?