Feature-length anime continuing the story of a burgeoning pirate. Like many others before him, Monkey D. Luffy (voice of Mayumi Tanaka) is obsessed by the tale of the treasure hoard called One Piece reputedly buried by the Pirate King Gol D. Roger before his execution. Armed with only his irrepressible nature, Monkey sets out to become a pirate in the dangerous waters of the Grand Line - and it isn´t long before he has his own crew of ruffians, a ship and a navy fleet on his trail as he searches for the treasure that will crown him the new king of the pirates. In this film, the kidnapping of Nami (Akemi Okamura) by a rival pirate who wants to utilise her uncanny navigational skills forces Monkey and his crew to prepare for battle. Who will triumph?