The Thief Brothers notify Monkey D. Luffy, the daring Captain of the Going Merry and hopeful Pirate King, that the Trump Kyoudai (Trump Siblings) have pilfered his vessel and established a stronghold on Clockwork Island. Together with his team consisting of Nami, Sanji, Usopp, and Zoro, Luffy undertakes a perilous mission to ascend Clockwork Island and retrieve their stolen ship.