In the Andromeda galaxy, there is a planet home to a highly developed human civilization. The gentle Prince Itaka and the beautiful Princess Lilia of another kingdom are about to enter a love marriage and assume the throne when they spot a strange object in the night sky. Later, it lands on the planet, and an alien, mechanized civilization invades King Itaka's peaceful country, enslaving nearly everyone. On a fateful night, Queen Lilia gives birth to twins, and to avoid misfortune, the nanny Tarama takes one of the babies away and entrusts it to the gladiator Balga. They still do not know that the children were born with strong powers and hold the key to the fight against the enemy, which is searching to destroy every human civilization on the planet...