When a stranger named Smith arrives at Don Luis Alvarado's Southern California ranch looking for work, he is hired as a hand. Smith and the Don's beautiful daughter, Senorita Carmelita, become attracted to each other until one night, when Carmelita surprises Smith as he and a gang of thieves are stealing her family's jewels. Smith is arrested, along with the thieves, but his true identity is established in court when he reveals that he is Michael Cochrane, a U.S. marshal who infiltrated the gang of thieves to obtain a conviction. He brings the gang to justice and marries Carmelita.