A stock market broker plans to liven up his boring life by taking up piracy on the high seas.

When Red Hawk Dugan and his men attack a small wagon train, Colonel Merriwell is killed and the young girl Isobel taken and raised thinking Dugan is her father. Fifteen years later the Colonel's son Jack arrives looking for Dugan whom he learned killed his father. As he hunts for Dugan he meets and falls in love with Isobel only to then learn Dugan is her father.

Karger is behind all the cattle rustling. After Tom Devlin catches his man Burke in the act, Burke hides evidence against Karger in his jail cell. Later when Tom is jailed he accidentally finds the evidence, but the Karger encited mob has jailed the Sheriff and is already on the loose.

Roommates panic and plan when they hear a radio report of a murderer loose in their neighborhood.