When “Snap” Burke rides into the town of Gun Rock, he runs afoul of Jacob Ramsden, a crooked saloon owner who owns much of the town and has the sheriff on his payroll. Ramsden frames Burke for the murder of a mail- carrier and the sheriff locks him in jail, but Burke busts out before he can be hanged. Burke believes that the mail-carrier was killed by Ramsden and he is determined to prove that the saloon owner is guilty.