National attention for saving a suicidal student's life gets common delivery girl Jan Di enrolled at the über-prestigious Shin Hwa High School, where she soon becomes the target of elitist bullies.
Jan Di's defiance against Joon Dyo's latest humiliation has a strange effect upon him. What she thinks begins to matter, but he's wholly at a loss what to make of her open disgust, believing it false.
The Mean Girls Trio only has eyes for Joon Pyo, who only has eyes for Jan Di, who only has eyes for Ji Hoo, who only has eyes for Seo Hyun, who has an important announcement.
When the student body acknowledges Jan Di as Joon Pye's official girlfriend (be they right or wrong), it sets wheels of betrayal in motion against Jan Di.
After dealing with Min Ji's betrayal, and officially declaring Jan Di his girlfriend, Joon Pye takes her and others to his private getaway in New Caledonia.
A triangle has definitely developed between Jan Di, Ji Hoo and Joon Pyo during their weekend getaway, but something may also be developing between Yi Jung and Ga Eul as well.
Having overnighted with Jan Di's family, Joon Pyo gets immersed in their commoner lifestyle and habits. Enjoyable, till an ungentlemanly charmer goes too far.
It's Valentine's Day, and upon seeing Joon Pyo making a public fool of himself, Kang Hee Soo takes actions to remove the Jan Di "weed" from his social garden.
A hospital diagnosis strikes deeply at Jan Di. With Joon Pyo still away handling company business, Ji Hoo sees Jan Di through her low point (and more).
While Yi Jung and Woo Bin intervene before the Joon Pyo/ Jae Kyung engagement becomes permanent, Jae Kyung asks "little sister" Jan Di to help her win over Joon Pyo.
Homeless (thanks to Hee Soo), Jan Di winds up as a maid in the Kang mansion (thanks to Joon Hee), becoming Joon Pyo's personal servant (thanks to the observant head maid).