In Qingyun College, where people with supernatural powers gather, Lin Yi, a new student, awakens the dangerous "Eternal Night" power - his shadow can swallow everything, but it always bites him back. Iceberg girl Gu Xueyi, as the academy's supervisor, was ordered to monitor him with ice powers, but found that when their powers collided, they would awaken the same vision of the bloody full moon in each other's memories.
When the alien rift reappeared on campus, the clock tower turned upside down, and the classroom turned into a maze, the old enemies who were forced to team up gradually revealed the truth: Lin Yi's right eye was sealed with the blood of the ancient demon god, and Gu Xueyi's frozen heart was beating with the last fire of the Night Watch. And the "Long Night" disaster that caused catastrophe in the supernatural world fifty years ago is reincarnating in time and space every time they join forces...
"You are my candle in the eternal night."
"You are my heartbeat under the ice."
In this war where the survival of mankind is at stake, the most dangerous thing is never the monster, but the sound of the chains breaking deep in their souls when they look at each other.
