An epic tale depicting the heroic "Next Lady," a righteous warrior who fights endlessly to protect Earth's peace, as she confronts a new threat. Suddenly, a mysterious alien appears in the city, draining the life force from humans. Despite the Earth Defense Force's efforts, they fail to uncover its true nature, and as the phenomenon grows, fear spreads among the people. Through a breakthrough in the Doctor's research, the alien's identity is revealed—Gomirian Steinberg, a former research colleague turned enemy. It is discovered that only the nuclear decomposition virus he developed can stop the invasion. While time is needed to complete its development, Next Lady resolves to defend the city with her own body. Here begins a gripping story where her strength, compassion, and unwavering sense of justice are put to the ultimate test.