Amaterasu is the god of light, the future emperor of the Joker Star System. Under the guise of young mecha conceptor Ladios Sopp, he is compelled by an old friend, Dr Ballanche, to save his two latest Fatimas Lachesis and Clotho. And so began the stories of the Joker System, as well as Amaterasu's love for Lachesis.
Ladios Sopp is heading towards Bastogne where the presentation of two newly awakened fatimas is about to occur. Fatimas are androids designed to be mandatory co-pilots of giant robots called mortar headds. Both fatimas are acquaintaces of Sopp and during their introduction it is expected that they choose the pilots with whom they shall become partners of.
