One Piece: Heart of Gold

Synopsis

The Straw Hat Pirates encounter Olga, a girl who fled the vanished island of Alchemi. Alchemi was once famous for its metalworking and the creation of the immensely valuable Pure Gold, but the island disappeared two hundred years ago. Olga is now being chased by the Marines, who are interested in the Pure Gold. Gildo Tesoro, who controls the Navy headquarters and the black market, learns of Olga and hires the treasure hunter Mad Treasure to track her down. The Straw Hats team up with Olga to search for the Pure Gold, while she plans to use them and the treasure to make herself wealthy.