A group of bank robbers, led by Trigger and Leon, capture a witness named Ann Fenwick and flee to Canada. They lock her in a stolen trailer with the stolen loot, but it plunges into a lake. A Canadian Mountie, Sergeant Renfrew, and Constable Kelly rescue Ann, but she gives a false name and escapes. Renfrew is later captured by the gang, but Kelly remains at large, waiting to help Ann and foil the robbers' plans.
Fighting Mad
When Ann Fenwick witnesses a bank robbery in the U.S., the bandits take her captive, and her subsequent disappearance leads to a warrant being issued for her arrest as a material witness.