Su Nian inherited her grandma's old house and accidentally triggered the old clock left by her grandma when she was sorting out the belongings. From then on, she and the hired clock restorer Lu Shiyan were trapped in a repetitive three hours every day. The clock "speaks" in an endless cycle. Only two people touching the clock at the same time can see the past fragments it records.
In order to break the cycle, they are forced to cooperate: looking for clues from time fragments to piece together the grudge between grandma and her business rival back then - it turns out that the time circle of the clock is actually the remnant of the rival's conspiracy back then. Each cycle hides new foreshadowing, and each piece of the past is related to the key to breaking the situation. In the repeated 3 hours, the two people went from strangers to trust, and their relationship gradually warmed up. Finally, they worked together to uncover Grandma's past and break the clock cage.
