A mysterious criminal named Ironface seeks revenge on Big City by capturing the District Attorney, the Warden of Rockatraz, Detective Malloy, Mayor Gaunt, Judge Grater, Chief of Police Grisby, and the Chief Prosecutor, as well as the Blue Falcon and Dynomutt who it blames for its incarceration. When the Blue Falcon and Dynomutt get captured, they work to free themselves and the other captives. Then they defeat Ironface and its minions as the Blue Falcon unmasks Ironface to be Serpent Lady.