Three thieves rip off a shipment of used money being sent back to the US. As they are escaping the robbery (after having taken a hostage), they wind up on an island in a hotel with an apparently crazed manager and a building full of demented residents.
A petty crook gallantly consoles wealthy widows and is doing all right in his chosen profession until he meets and falls in love with a lovely baroness, who knows all about get-rich-quick schemes.