Lucas and Mark are helping a neighbor, Mr. Halpern, on a cattle drive. A young bounty hunter, Clemmie Martin, accosts them with a "wanted" poster in hand. Mr. Halpern turns out to be the wanted criminal and a gunfight occurs in which both Halpern and Clemmie are killed. For the sake of Halpern's widow and son, who know nothing of his previous criminal life, Lucas and Mark tell everyone that Halpern's death was an accident. The incident rests until Clemmie's father and older brother come searching for the man who killed him, find the "Wanted" poster, and mistaking Lucas for the wanted man, then go hunting for him.