While at a wedding, Yi Ming runs into Ting Ting, a girl she once had history with. She reminisces on their past, and how they first met.

Yi Ming invites Ting Ting over for dinner after she helps her and her son; while on a family outing, Xiao Zhe goes missing.

The Yi Ming and Ting Ting of the past explore the boundaries of their friendship; in the present, Ting Ting stays over for the night.

Back in high school, Ting-Ting and Yi-Ming take things further; forced to flee from a flasher, Yi-Ming hurts her ankle; an older boy demonstrates his concern for Yi-Ming.

In college, Yi-Ming finds a boyfriend and her longing to be loved poses a threat to her family; Ting-Ting re-enters Yi-Ming's life.

Ren-Xiu and Yi-Ming arrive at a stalemate, with every conversation carrying hostile undercurrents; Ting-Ting and Yi-Ming meet and give voice to their feelings.