In Japan, Hisako Ichiki tries to live a normal life despite the political upheaval affecting the new Ultimate Universe. Her everyday existence changes when she develops strange powers that allow her to create armor around her body. While trying to understand what is happening to her, she meets Mei Igarashi, also known as Maystorm, another teenager facing similar supernatural phenomena. Together, they begin investigating a disturbing presence that appears connected to the emergence of new mutants. Between high school life, urban legends, and powers they are still learning to control, Hisako gradually discovers a community of young outsiders whose existence could challenge the established order.