After a chance encounter in LA, two teens from different social backgrounds reunite at an exclusive high school attended by Korea's uber-rich.
Choe Yeong-do and his father meet with Yu Rachel and her mother, but it doesn't go well. Cha Eun-sang is stunned by news about her sister in America.
With nowhere to go, Eun-sang accepts Tan's offer to stay at his palatial beachfront house, where Rachel shows up announcing herself as Tan's fiancee.
After getting a call from Seoul, Tan goes to meet his brother Won, who's not happy to see him. Tan and Eun-sang get stranded in the middle of nowhere.
Eun-sang and Rachel end up on the same flight back to Seoul. Irritated at finding Yeong-do waiting for her, Rachel provokes him by talking about Tan.
Tan is shocked to see Eun-sang living in his house. Tan is dismayed by news that Won has moved out, and his father's latest order upsets Won.
Tan and Yeong-do have a tense reunion. Viewing Tan's aloofness as a personal affront, Rachel is furious about Eun-sang enrolling at their school.
Yeong-do tries to bait Tan, but he refuses to bite. Tan's mother asks Eun-sang to keep an eye on Tan but makes sure that Eun-sang knows her place.
Eun-sang is distressed that Tan keeps telling her what to do and can't fathom what he wants. Won sees Hyeon-ju getting out of someone else's car.
Eun-sang receives help from someone unexpected. The tension brewing between Tan and Yeong-do turns explosive, but Rachel takes it out on Eun-sang.
Tan apologises to Yeong-do's father, but this worsens Yeong-do's situation. Tan warns Yeong-do and wants to keep their families out of their fight.
Tan demands to know what Eun-sang is doing with Yeong-do, but she wants them to stop drawing her into their feud. Eun-sang faces Yeong-do.
Tan hears the truth from Yeong-do. Yeong-do tries to comfort Eun-sang. The other students start to suspect that Yeong-do's feelings may be sincere.
Rachel and her mother are livid about what they learn. Yeong-do makes an uexpected move. Tan and Eun-sang spend the night at a friend's place.
Tan comes to blows with Yeong-do - and Eun-sang is caught in the middle again. Eun-sang is forced to rummage through the trash because of Rachel.
Yeong-do has stern words for Rachel. Won and Yeong-do's father learn that Tan is ranked in 100th place in school, while Yeong-do is ranked 98th.
Tan's father meets Eun-sang. Having witnessed the fierce battles over his grandfather's legacy, Won doesn't see the point of trying to understand Tan.
Tan goes to his father demandng to know what happened to Eun-sang. Yeong-do is overwhelmed and relieved to see that Eun-sang is safe and sound.
When Tan comes home bloody and beaten up, Won tries to talk some sense into him. Won asks Yeong-do why Tan is in such a bad state.
At Tan's party, Won meets his match - for a marriage arranged by his father. Won and Tan discuss what their father's condition means for the company.
Hyeon-ju lets go of Won. Tan wants to know why Won has to make a sacrifice, but Won says it's necessary for the company and is his responsibility.
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