Thunder Island

In Baja Mexico, poor shepherdess Isola Garcia agrees to marry aging rancher Don Pio Mendoza because he is dying and needs an heir for his fortune. She leaves the hacienda when she hears that bandits have raided her flock, and when a young American schooner captain, Paul Corbin, comes to her rescue, she falls in love. Then, as they walk on the beach, Mendoza's secretary arrives to inform her that Don Pio has recovered and wants her to return to him. The secretary takes her to a hotel, where he tries to convince her that he is the real Pio Mendoza, but she refuses to have relations with him unless he marries her the next morning at the church. That night, she encounters a young man, buys his clothes, and escapes the hotel in disguise. At the quay, Isola sees Paul's schooner in the distance and jumps into the water to swim to him. However, the gang has taken over the schooner and imprisoned Paul and his crew in the hold. With the aid of a marijuana-addled young bandit named Sanchez, Isola frees the crew, which subdues the Mexicans. Isola and Paul sail away together to the United States on the schooner.