Mr. and Mrs. Tim O'Brien hire orphan Mary Duffy to care for their son Red, then desert the two of them while eluding the police. Mrs. O'Brien abandons Tim, who can see only at night, and she is killed by an automobile. After finding a home with the Hortons, Mary discovers that Dr. Horton's son Robert is taking European Relief funds from Horton's safe to use for gambling, and she informs Tim of the theft. Tim agrees to recover the money from the gambler's safe, is nearly caught, and is reunited with Mary and Red.