 The city of Mahagonny is founded by three criminals. It becomes a place for people who are looking for their luck or for money. Jim Mahoney, along with other lumberjacks from Alaska, have long dreamed of the city in the cold winters of Alaska. Jim falls in love with a prostitute called Jenny. However, Jim is not quite happy with what the city is and the rulers of the city are not quite happy with what Jim does. He becomes guilty in the deadliest sin of Mahagonny: he has no money!