The Cartwrights come to the rescue of four inexperienced homesteaders, when devious cattle ranchers try to run them off their property.

A young troubadour, who blames Ben for the death of his father, returns to Virginia City. In one scene, Ben says the young man is welcome to use Adam's guitar.

In the 12th season premiere, a series of destructive fires strike Virginia City, and always late at night. Is it the work of a ruthless arsonist, or someone very close to Deputy Clem?