Rock, a time patrolman of the 23rd century, goes to the country of Molavia in the 15th century with Astro, Uran, brilliant surgeon Dr. Roget and his assistant Penny. Rock accidentally hurts the prince seriously and Dr. Roget treats him, but the great king of wizardry Gore, who wants to take the throne, interferes. Astro and Rock capture Gore, who is a time criminal.