Gamarket, a world not that different from Gamindustri, is ruled by four CPUs of each nation, Planeptune, Lastation, Lowee, and Leanbox. But during a battle for Gamarket's complete control, Noire, the goddess of Lastation, manages to defeat her adversaries and achieve victory. However, just as she was about to gain control of Gamarket, a mysterious force occurs and snatches away the source of their powers, the Shares, thus causing them to lose their powers as a result. With Gamarket plunging into further chaos as a result, the four goddesses decide to team up once again to find the culprit responsible and take back their Shares.