Martha Andersson and the League of Pensioners have left behind their dreary old-age home in Stockholm and are headed for the bright lights of Las Vegas. This is their chance at a new lease on life, and they plan to make the most of it. But before long they are up to their old tricks, plotting to outwit the security system at one of the city's biggest casinos. However, they aren't the only ones planning to steal bucket loads of cash, and soon they find themselves pitted against a gang of dangerous criminals.