The Sailor Guardians, led by Sailor Moon, continue their mission to safeguard Earth from potential threats. However, recent developments indicate that a new battle is imminent. Two new guardians, Sailor Neptune and Sailor Uranus, have emerged, bringing with them a quest for three Talismans located within Pure Heart Crystals in humans. When united, these talismans form The Holy Grail, an object of immense power. Despite their noble intentions, the Death Busters, an evil organization, seek to harness this power for their own selfish ends.
To obtain the Talismans, Uranus and Neptune believe it necessary to remove them from individuals' Heart Crystals, resulting in their untimely demise. While Sailor Moon and her team view this act as unforgivable, the newcomers argue that the sacrifice is justified if it ensures the survival of humanity.
Is any sacrifice truly worth the cost when considering the potential consequences? This dilemma raises ethical questions about the value of life and the justification of taking it in pursuit of greater good.