U. S. Marshals "Lash" LaRue and "Fuzzy" Jones are summoned into a bandit-ridden territory by a local banker. Since the bandit, El Azote, is known to wear a mask and carry a bull-whip, the local saloon owner, not knowing "Lash" is a lawman, hies him to impersonate the outlaw, and pull a series of hold-ups which will be blamed on El Azote, "Lash" intends to return the loot he acquires to its rightful owners, after he has learned the identity of El Azote, but his own identity is discovered by the gang before he can do so.
King of the Bullwhip
Marshals Lash and Fuzzy have been sent to bring in the masked whip wielding El Azote. When Lash displays his ability with his whip, he is hired to impersonate El Azote. This eventually brings the two together for the climatic whip fight.