After being warned by the Thief Brothers, Luffy learns that his vessel was seized by the Trump Kyoudai (Trump Siblings), who have established a stronghold on Clockwork Island. The Captain of the Going Merry, Monkey D. Luffy, together with his crew—Usopp, Zoro, Sanji and Nami—engages in a fierce, relentless campaign up the island to retrieve their ship.