Grandpa died suddenly, and Yu You became the new owner of the old watch shop, but was plagued by a series of precognitive dreams - the murders in the dreams came true again and again. She broke through the fog and discovered that her grandfather's death was a carefully planned murder, and that there were always invisible hands behind the subsequent serial murders. The ticking bell is both a reminder and a key to solving the mystery. In this murderous memorial that revolves around the clock, the ultimate goal of the controller is gradually emerging with the swing of the ancient clock.
Concept: suspense reasoning