Ancient architecture restorer Jiang Nanshan falls for medical student Li Ai, only to discover that she comes from a parallel world where time flows in reverse and their timelines move in opposite directions.
| Actor | Role |
|---|---|
 Bi WenjunJiang Nan Shan | Jiang Nan Shan |
 He LandouLi Ai | Li Ai |
 Wang YanhuiTeacher Zhang | Teacher Zhang |
 Hou YongFather Jiang | Father Jiang |
 Liu BateerTie Nan | Tie Nan |
 Hu ZixuanQiu Ye | Qiu Ye |
 Wang MianTalk show host | Talk show host |
 Duan BowenCoffee shop owner | Coffee shop owner |
 Feng YunzhiJiang Mu | Jiang Mu |