Sailor Aquos is a heroine who has fought tirelessly to protect world peace. However, behind her lies an unexpected conspiracy. One day, she becomes caught in a sudden attack. The assailants are not mere monsters or villains, but humans—members of a sinister organization targeting her. Finding a man on the ground being assaulted, Sailor Aquos immediately decides to help without hesitation. But in that very moment, a new attack strikes from behind. A cloth laced with drugs is clamped over her mouth, and she quickly loses consciousness. This series of events marks a major turning point in her life.