Amaterasu, the god of light and future emperor of the Joker Star System, disguises himself as the young mecha conceptor Ladios Sopp. Persuaded by an old friend, Dr. Ballanche, he is compelled to rescue the two newest Fatimas, Lachesis and Clotho. These events mark the beginning of the Joker System’s saga, as well as Amaterasu’s growing affection for Lachesis.