Joker is overjoyed to get a vacation invitation from Silver Heart, but it turns out to be an invitation to the Phantom Thief Survival Game, which is held once every four years to determine the number one Phantom Thief! Joker's not enthusiastic about the idea, until he sees how excited Hosshi is over the grand prize, the Gaia Bird. Could the Gaia Bird be related to the ancient secret treasure? Joker suddenly decides he wants it... But can he beat a gathering of phantom thieves from all over the world to get it?!