Soon after being released from a Hong Kong prison, professional gambler Crab and his friend Sam are summoned by a tycoon named Dragon to his casino in Lake Tahoe to crack a baccarat scam being run by the half-Chinese and half-Japanese Taro and his father Gubon, head of a powerful Japanese syndicate. There, Crab and Sam also meet Catherine Ashley, a rich heiress who is on vacation. Catherine and Sam also develop a relationship.