Lobo the Marvel Dog

Deux politiciens corrompus attaquent et volent un chargement d'or, tuent le conducteur et font retomber la culpabilité sur un paisible cowboy. Le fils du conducteur tué et son chien tentent de prouver l'innocence du cowboy.

Attorney Joshua Scranton hires "Budge" Edwards and Larry Donovan, who has just bought into Edwards' detective agency, to protect Estelle Hudson, a client of his who is to inherit three-million dollars the next Thursday. He tells them he has reason to believe the girl is in danger from five relatives who stand to benefit from her death.