In the town of Heldorado, the Tulliver brothers wreak havoc, prompting Shamrock to take action. Disguising himself as a cowboy, he takes down two brothers in a confrontation gone awry. After eliminating a third, the Tullivers regroup and orchestrate a daring bank heist. With his true identity exposed, Shamrock assembles a posse and they launch a pursuit to apprehend the outlaws.
Marshal of Heldorado
In the town of Heldorado, two brothers are wreaking havoc, prompting Shamrock to take action. Disguising himself as a cowboy, he successfully apprehends two of the brothers when they accidentally shoot each other while trying to take him down.