The story follows Lin Ge (Li Yifeng) and Qiu Qian (Li Meng), childhood sweethearts. After a tragic accident on their first date, Lin Ge discovers a magical pocket watch that can rewind time.
Would you like to know where to stream it, or more about the ending?
The watch has a visible inside — hence fans calling it the "clock heart" movie. The film follows Lin Ge sacrificing himself repeatedly across different timelines to keep Qiu Qian alive, even though she never remembers who he is.