Plump and Runt get into a poker game at the club and are arrested. The judge gives them thirty days. Before going to jail they phone their anxious wives that an important business trip will keep them away from home for a month. In the jail they meet a hobo who attaches himself to them. Released, they find that the knight of the road cannot be shaken off, so they are forced to introduce him to their wives as a friend, a famous detective in disguise. He makes life a burden for them until the wives, taking matters into their own hands, drive off the hobo with carving knives.