After a scandalous high school graduation ceremony, a chaebol heir gets stunning news from his father, while his friend is jilted by a social climber.

Kwon Si-hyeon proposes an outrageous plan to Choe Su-ji, who agrees to it on one condition: He must first seduce Eun Tae-hui, and then dump her.

Tae-hee is a such a cold girl who never had any interset in boys. But now she wants to know more about Shi-hyun.

Su-ji worries that Si-hyeon is starting to truly fall for Tae-hui. Su-jis mother catches her fiancé in a lie. Tae-hui's moving day arrives.

Eager for Si-hyeon to complete his seduction of Tae-hui, Su-ji arranges a group getaway. Si-hyeon's father whisks his old flame away on a day trip.

Su-ji tells Tae-hui a lie about Si-hyeon. Su-ji's mum recalls an accident. Lee Se-ju learns Su-ji and Si-hyeon have been keeping a secret from him.