Luffy and Zolo are one step closer to One Piece when they track down a map of the Grand Line. Too bad it's under lock and key in the ship of the most feared pirate on the sea-Captain Buggy! And as if that weren't bad enough, a mysterious, pirate-hating navigator named Nami is after the very same map and always seems to be one step ahead of them. Can Luffy and Zolo face down the entire crew of fearsome clowns and outwit Nami on their way?