Hopalong rides into a firestorm of violence and  betrayal. On the rain-drenched trail to the  lawless town of Seven Pines, Hopalong discovers two men  -- one dead, the other badly wounded. Returning  with medical help, Hopalong finds the wounded man  has been shot through the temple. Who would  commit such a murder? To find out, Hopalong hires on  at Bob Ronson's Rocking R Ranch. There he learns  that more than a thousand cattle have been run off  by men keeping one scheming eye on the ranch and  the other on the monthly stagecoach shipments of  gold. Hopalong is determined to stop those  responsible. But even the best gunfighter needs men he  can trust to watch his back, men willing to risk  their lives to do what's right. With their help,  Hopalong fights to save the Rocking R, only to  find himself the target of a ruthless gunman in a  life-and-death struggle for frontier justice.