As a catastrophe strikes and parents are separated, He Qiu takes his younger sister He Nian, who has a leg injury, to escape their home. To save his sister, he swallows abnormal tissue inside a monster, gaining extraordinary strength and hearing, while his eyes begin to mutate. The siblings hide in a shelter, but their brief stability is shattered by another beast attack. Relying on his abnormal perception, He Qiu takes risks to save people, yet he also attracts mounting suspicion: is this teenager who can perceive monster movements in advance still human?