Michale Lanyard, the "Lone Wolf" (Warren William), is kidnapped off a Washington, D.C. street and taken to a man whose face is hidden in darkness. The mystery man offers Lanyard a job: breaking into a safe. When Lanyard declines, he is released unharmed. Afterward, a puzzled henchman named Jenks states they can open the safe without help. His boss reveals that he has "an old score to settle with the Lone Wolf".