Just when everything is going well for a 31-year-old woman, a very unusual kink complicates her life. Li Qin Ai is a magazine photographer who is happy with her career and her relationship with her boyfriend, Zhou Li Yang. She has tried hard to forget her first love, Dai Hai An, after they broke up 10 years ago. When Hai An reappears in Qin Ai’s life unexpectedly, some things are just not right with him. First of all, he is still his 18-year-old self from their youth, and he is “half-transparent.” Qin Ai begins to wonder why she is the only person who can “see” Hai An and if he's actually dead and appearing before her as a ghost. Whatever may be going on, it’s obvious that Hai An has no intention of leaving her alone and negotiates with Qin Ai to live with her. Could this be Hai An’s way of reconciling his past with Qin Ai or could this strange situation make Qin Ai question the certainty of her future?