Yan Yuechu returned to his hometown to work and met new friends in the company he joined. After entering the XY Secret Room to play the secret room game, he found himself attracted to the owner of the secret room, Xu Aiyu. However, this was the beginning of his entrapment in one strange secret room after another. At the same time, as Yan Yuechu came into contact with Xu Aiyu, more and more incidents happened around Yan Yuechu, and these incidents even involved his friends. In the process of cracking the secret room and looking for the mastermind of the incident, Yan Yuechu gradually touched upon the truth of the incident that was hidden that year...