Yu Otosaka appears to be an ordinary high school student, but secretly possesses the ability to control others' bodies for five seconds. He exploits this power to cheat his way into a prestigious school. However, his scheme unravels when Nao Tomori, a girl with her own supernatural ability, exposes him. She forces Yu and his sister Ayumi to transfer to Hoshinoumi Academy, a school for adolescents with special powers. As student council president, Nao leads efforts to secretly track down teenagers who misuse their abilities. Yu reluctantly joins this mission, discovering that these powers come with consequences and responsibilities he never imagined.