When monstrous creatures known as "Inhumans" suddenly appeared and began a xenoterran invasion of Earth, the only thing standing between humanity and extinction were the Superhumans—individuals who suddenly awakened extraordinary abilities. Kang Lim is a quiet high school student with a massive secret: he is the "White Cap," a legendary vigilante who has been single-handedly holding back the Inhuman tide in Korea. As the monsters evolve and reveal a sentient, malicious leadership, the scale of the war shifts from local skirmishes to a global apocalypse. Unlike typical superhero stories, Superhuman Era explores the terrifying physical and psychological cost of being a protector in a world where the enemies are truly alien and relentless.