Mr. Fliver deserts his wife in the park and flirts with Fay. Fay thinks him rather fresh and calls Maloney of the motorcycle squad to send Mr. Fliver about his business. Maloney’s services are hardly needed, because Mrs. Fliver arrives on the spot and leads her fickle husband off by the ear. Maloney is very attentive to Fay and escorts her home. Fay’s papa doesn’t like the idea of Maloney paying attention to his daughter, so he roughly orders him to beat it. Fay manages to slip a note to Maloney, which hints that he must call again. That night Fay’s papa and mama order Fay to bed and then set out in their auto for a picture show. Shifty Sadie, a notorious thief, sees the auto in front of the picture theater. She gets in and rides away with it. Maloney, always on the job, sees her and sets out in pursuit. Sadie sees Fay’s home darkened and quiet and decides to do a little second story work. She leaves the stolen auto and enters the house. Maloney sees her and follows. Fay sees Sadie with drawn revolver in the hall. She is frightened to death, and clad in pajamas, gets out of the window, runs to the front of the house, gets into the auto and sets out to find a cop. Sadie is frightened out of the house by Maloney. She misses the auto, but manages to get away on Maloney’s motorcycle. Maloney gets another motorcycle from a fellow officer and goes after Sadie. Fay’s auto breaks down. She dreads being seen in her pajamas. Someone approaches. Fay ducks into the first house she sees. It happens to be the home of Mr. Fliver. She hides under the bed in Mr. Fliver’s room. Sadie gives Maloney the slip, and ducks into a convenient cellar door. Fay finds herself in a tight fix when Mr. Fliver enters his room, soon followed by Mrs. Fliver, who finds Fay under the bed. In the excitement Fay manages to get into the hall, where she barely escapes bumping into Maloney, who is still hot on the trail of Sadie. Maloney arrives, still tracing Sadie. They round up the thief in the basement. Maloney exonerates Fay to Mrs. Fliver, and takes her home in the machine. And Papa and Mama are so glad to have their auto and their daughter again that they receive Maloney into the family.