In their quest to protect the Earth from danger, Sailor Moon and her cadre of Sailor Guardians are unwavering. However, the appearance of Sailor Neptune and Sailor Uranus, along with Sailor Mars' dark premonitions, suggests that a conflict of great magnitude is on the horizon. Sailor Uranus and Sailor Neptune are seeking three Talismans that are each hidden within a human's Pure Heart Crystal, with the ultimate goal of combining them to create The Holy Grail, a powerful and mystical object. While they believe that using this powerful artifact can save the planet, a sinister group known as the Death Busters covet its power and seek to claim it for themselves. The act of extracting a Talisman from a person's Heart Crystal can result in their death, a sacrifice that Sailor Uranus and Sailor Neptune believe is necessary for the greater good. Conversely, Sailor Moon and her allies find this choice abhorrent. Still, the question remains: how far are they willing to go to protect humanity from certain destruction?