Storyline:

Lee Jung-Eun (Jeon Hye-Jin) is a working mom with a 7 year old daughter, Hong Seo-Yoon (Kim Sa-Rang). Lee Jung-Eun is enthusiastic with her daughter's education, like the other mothers in the competitive neighborhood of Daechi-dong, Gangnam District, Seoul. To send her daughter to a famous private institute, Lee Jung-Eun asks her mother Yoon Ji-A (Jo Min-Soo) to drive Hong Seo-Yoon to the private institute. Yoon Ji-A raised Lee Jung-Eun alone as a single mother.