After finding out the real reason for Robin's betrayal, the Straw Hats are in a madcap race to rescue her from CP9, the Navy's elite assassin group. But first they'll have to find a way to sail through the tidal wave known as Aqua Laguna. Will the Rocketman be seaworthy for the task at hand, or will it be a runaway train to catastrophe?!
The Straw Hat crew is vigorously chasing down Robin, trying to reach her before she arrives at Enies Lobby. But can their sea train, Rocket Man, catch up with Robin and CP9's sea train? Many challenges are awaiting them on this chase. The fearsome weather poses a threat, but the CP9 members they'll encounter are much more deadly!