Yoshiyuki Otomo, a member of a team of commercial spies called Bounty Dog, travels to the moon to investigate the Constans Corporation's "Project Kaguya". There, Yoshiyuki meets a mysterious woman named Ines who seems to know him, and who resembles a woman who died on Earth a year earlier. As Yoshiyuki and the Bounty Dog team fight to learn the secrets of Ines and Project Kaguya, the fate of humanity hangs in the balance.