Three crooks are out boating when they notice a man in the water. They return him to shore, and realize it's The Joker. He becomes the leader of their new gang, The Four Cards. They develop a plan to run a gambling ship so they can pump information about their guests' jewels. Meanwhile, at the Wayne home, Bruce informs Dick that he's going to check out the gambling ship as he cuts himself shaving. He goes aboard the ship that night, and meets Queenie, one of The Four Cards. She notices the nick he got shaving and then the two part ways. Bruce strolls onto the deck to light a cigarette when he overhears four people (including Queenie) planning to rob a rich, old woman. They notice him, and as he tries to make an excuse, knocks him out. They proceed to throw him overboard, and the water revi