Waking up in the middle of the night, Shen Yan found a person exactly like himself standing next to the bed - wearing the same pajamas, but with eyes as cold as a corpse. The other person whispered: "You are too tired to live, it's time for me." He thought it was a dream, but the next day, there was a text message on his phone that he had never sent: "Don't trust anyone, including you." As the "other me" began to replace his life: replacing his job, his lover, and even his memory, Shen Yan realized that this was not a clone, but the "self" he had suppressed for twenty years had awakened, and it was going to swallow him completely. When reality begins to collapse, he must find out what he has forgotten before he is replaced...