When gunslingers employed by Sam Shanks terrorize the small New Mexico town of Eden, Bat is drafted to serve as a special prosecutor when one of Shank's men is to be tried for murder and the expected result is a not guilty verdict.

Bat's riding rescues three men from the gallows - he bears an amnesty for all combatants in the Lincoln County War. The three gunmen soon return to their criminal ways and Bat must help the local marshal hunt down the recently freed men.