ONE PIECE: Heart of Gold

A girl named Olga, who has fled the island Alchemi, joins the Straw Hat Pirates. Alchemi was famous for producing metal and creating Pure Gold, a highly valuable substance, but the island vanished centuries ago. Olga is being hunted by the Marines, who are also after the Pure Gold. Gildo Tesoro, a figure with influence over the Navy and the black market, learns of Olga and employs a treasure hunter named Mad Treasure to pursue her. The Straw Hats team up with Olga to find the Pure Gold, though she secretly plans to use them to gain the treasure for herself.