The Straw Hat Crew arrives at the desert island of Alabasta to help Princess Nefertari Vivi stop the social unrest her country is facing. Behind the heated conflict is the Baroque Works pirate organization, which has been conspiring against the kingdom with the aim of stealing the secrets of an ancient mass destruction weapon. As the situation grows out of control, Monkey D. Luffy and Vivi must quell the revolution before the nation collapses entirely.