Twenty five years after defending the people of California, Zorro has fallen a victim of age. The people are still being oppressed, now by Commandant Paco Pico and his aide Sergeant Sepulveda, so Zorro`s faithful servant Bernardo sends for Zorro`s son who is living in Spain. The son turns out to be a swinger always chasing the women, gambling and using modern weapons (guns, gas bombs, etc.) in his war on Pico.