Amaterasu, the deity of illumination and the prospective ruler of the Joker Star System, masquerades as the youthful mecha designer Ladios Sopp. Urged by his long-time companion, Dr. Ballanche, he embarks on a mission to rescue his newest creations, the Fatimas named Lachesis and Clotho. Thus unfolds the intricate tales within the Joker System, entwined with Amaterasu's burgeoning affection for Lachesis.