A beautiful workaholic is fired from her job as a marketing executive for a children's toy company. With her life spinning out of control she teams up with her neighbour, who owns a sex shop, to design and promote better sex toys.
Ga-In’s (Hong Soo-A) family went into financial difficulties when she was a college student. One day, she happens to meet Eun-Jung (Lim Seong-Eon). They went to the same high school. Unlike Ga-In, Eun-Jung seems to have everything including a happy marriage life and stable job. Ga-In feels jealous of Eun-Jung and soon she becomes obsessed that she is Eun-Jung.
Sung-chil works at the Jang-soo Store which is owned by Jang-soo. Sung-chil is stubborn and has a bad temper, but he changes after meeting Geum-nim. Geun-nim runs a flower shop and her daughter Min-jung does not like her meeting Sung-chil.