Four bad men have kidnapped Fatty's girlfriend and plan to kill her. Fatty's dog knows where she is, but Fatty doesn't and he was crying. However the dog came back to get Fatty, and they and the Keystone Cops went to rescue her.
Fatty
Fatty's Mother
Shell Game Operator
Shell Game Accomplice
Desk Sergeant (uncredited)
Hired Thug (uncredited)
Dog Catcher (uncredited)
Director