Betty has a rich inheritance, but she can't find it. She is engaged to Detective Duffer. One day. "The Flea" comes to rob her, bringing his accomplice, the ape.

When Jimmie Collins, a pickpocket, is arrested and brought before Captain Callahan of the Tenth, he is surprised because he is lodged in a cell. Jimmie claims acquaintanceship with Bill McFarlin, a corrupt political boss, and he sneers at Captain Callahan when he is ordered to be placed behind the cell bars.