In this western, set 30 years after the California gold rush, a mining engineer is assigned to supervise a mining operation in Perris, located in the primarily agricultural Sacramento valley. During a barroom fight, the engineer saves a farmer. He later falls in love with the farmer's sister. She does not return his affection as all California farmers hate the destructive miners. A battle breaks out between the two sides and the sister's brother is killed, but not before he blows up a crucial dam and starts a major landslide.