Trapped for three years in The Vivarium—a sadistic asylum where super-powered inmates are forced into weekly death games—Ren Zexi has survived by keeping his head down and his blood-fueled centipedes close. But when Lilliana Stone, a mysterious girl in a Victorian dress with a terrifying spectral guardian, arrives in Block C, Ren’s solitary existence is shattered. As the Warden’s experiments twist captives into nightmares and the facility’s dark secrets begin to hatch, Ren and Lilliana must forge an alliance in a world designed to break them, discovering that the only way to escape the cage is to become more dangerous than the monsters guarding it.