In a near-future world where a substance found in the human brain grants people extrasensory powers, society depends on the Other Suppression Force to defend the city of New Himuka. Their enemy is the Others: grotesque, mindless mutants that descend from an orbiting Extinction Belt to devour human brains. The story unfolds through two new OSF recruits, Yuito Sumeragi and Kasane Randall, each wielding powerful psychokinesis and offering their own perspective on events. As they battle the Others alongside a squad of gifted comrades, the pair are drawn into the dark secrets behind the invaders and the society built to fight them.