The Clock Mansion in Zuonai Village is full of horrific legends. After the builder, Arius, left, Zuoping's family encountered misfortune when they moved in, and the mansion was abandoned ever since. Due to the need to accommodate war victims, Bei An and others disappeared after entering the mansion. Yagi Onmatsu heard about this and formed a young detective team with his partners to find out. They found many strange things in the mansion, such as dry wells, moving walls, strange laboratories, etc. Yagi was accidentally trapped and was rescued by a strange prisoner wearing a death mask. He learned that the mansion was about to explode and the clock must be stopped. Yagi successfully stopped it after many difficulties, and then they made new discoveries in the mansion. And how many secrets does this mansion hide? What is the identity of the strange prisoner?
