As the apocalyptic red fog engulfs the city, Yan Hao witnesses the tragic deaths of his loved ones and the disappearance of his sister. Driven by revenge and a search for his family, he joins humanity’s last line of defense, yet harbors a most dangerous secret: a power surging within him, shared with the power of otherworldly beasts! In a post-apocalyptic battlefield rife with blood and flesh, he walks the fine line between hero and monster, devouring otherworldly beasts for strength, yet constantly on the verge of losing control! Continuously evolving, he absorbs the beasts’ abilities and takes them for himself! Slaughtering all before revealing his true form, he becomes the Crimson King!