Marine Sergeant Terry Gardner, a former private detective and former champion wrestler, tangles with some Germans, Maxim and Nada, who seek to murder Wilmer, the man Gardner is protecting. The Nazis, though, kill a gypsy. The gypsy's parrot, named Snoopy, helps Gardner to avenge his owner's death. Snoopy visits Gardner and inspires him by giving him a card telling him that "At Twilight you will be Master." Thus inspired, Terry buys a costume for himself and begins fighting crime as Twilight. Among his opponents were Boss Bogus, the Counterfeiter, Baby Face and his shrinking gas, and Brother, a gorilla thug dressed as a human and disguised with bandages. He is helped by Snoopy the Parrot, a wisecracking, foul-mouthed talking bird who he uses to gather information.