Join Monkey D. Luffy and his swashbuckling crew in their search for the ultimate treasure, One Piece! 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... The big powers converge as Luffy, Law, and Kid face off against Kaido and Big Mom. Is there any hope of victory against this ultimate alliance?! Onigashima quakes with power as some of the fiercest pirates in the world go head-to-head!!