Max Hansen is a petty thief. He has several small rackets, like stealing dogs and returning them to their owners for small change. A cop arrests him, but he slides through a window and finds himself in Jenny Jugo's bed room. This gets her tossed out, so he takes her home, where it turns out she is a good girl, mostly. Misadventures follow.
It's a fine comedy about love among the lower classes, co-written by Henry Koster and Curt Alexander, and directed by Erich Engel. Hansen, who had quite a career as a comedian, plays his role as a quiet, sneaky little fellow, always trying to improve the situation in a way that he hopes no one will notice. He and his fellow goniff, Willi Schurr, wear bowler hats that indicate low-class pilferers will recognize from EMIL AND THE DETECTIVES. If there is any seriously point to this entire movie, it's a live-and-let-live attitude; the policeman who keeps turning up, is quite content to cart criminals off to jail with a weary smile, while smiling benignly at half-dressed Jenny in a variety of bedrooms.