When her mother gets sick, 13-year-old Fen moves back to Taiwan, where she struggles to fit in amid the 2003 SARS epidemic.

According to the biggest dating website's research, teacher is among the top five professions most likely to cheat, and their students' parents are among the people whom they cheat with. Xiao-xiao, who has mild ADHD, is the troublemaker in her class. But she has her own trouble - her mother Wei-fang and her homeroom teacher, Paul, have started a romantic relationship as a result of discussing her ADHD conditions.

Hsiao-lee, a young girl, finds solace in her friendship with Li-li, who embodies the dreams Hsiao-lee had suppressed. However, Hsiao-lee's aspirations are challenged by her mother's past, which mirrors her own struggles and traps her in a cycle of despair.

Senior talent manager Le-Fu and commercial director Po-En have been in love for years. Due to their age gap and traumas from original families, neither has been willing to commit to the relationship, until a big surprise hits Love on her 45-year-old birthday and both of them are forced to decide on what their future will be.