Sailor Sapphire and Sailor Garnet are comrades with opposite personalities, like fire and water. The calm and intelligent Sapphire and the fiery, strong-willed Garnet each set out on their own paths after sensing the evil aura of the villainous organization Zuruza. However, Zuruza, aiming to revive their leader Gringam, begins a new operation, seeking a human offering possessing "a supple body, beautiful appearance, and an ugly heart." Their malicious plan to plant darkness within the Sailor warriors' hearts is set into motion. When Sapphire and Garnet come into contact with this venom, their minds gradually become corrupted, leading to misunderstandings and emotional turmoil between them. Ultimately, they fall into the villains' grasp, meeting a tragic BAD END.