The first episode begins with Lu Guang reminding Cheng Xiaoshi of the rules of going back into time. They have worked together for a while, and have formed a friendship that neither can deny. By clapping their hands together, Cheng Xiaoshi enters the time of any specific photo that Lu Guang is holding. Lu Guang can see anything that has happened in a photo within 12 hours of it being taken, and Cheng Xiaoshi can enter the body of the person who took the photo. Cheng Xiaoshi and Lu Guang are both the main characters of Link Click, with each of their own respective powers.
