Season 1

With the lower classes away, the school pits the senior honor students and senior losers against each other in physical challenges to prove which group is better.

While Oh Ha-ni's friends intrude on Baek Seung-jo's home, a family trip to the beach brings about desperation, a chance drowning, two sand burials, and uninvited guests.

Indirectly influenced by Ha-ni, Baek Seung-jo acknowledges his total lack of interest in anything and stuns the family by announcing his decision to forgo college.

With high school graduation looming, Ha-ni secretly picks up a few part-time jobs to get Seung-jo a nifty graduation gift but keeps running into him in the course of her duties.

Now at college, Ha-ni still follows Seung-jo around, but he's just as cold to her as before. Oh Ki-dong decides it's time they moved out from Baek Soo-chang's home and hospitality. Meanwhile, Eun-jo has a crush.

Inept player Ha-ni gets stuck playing tennis doubles with Seung-jo against Yoon He-ra and Wang Kyeong-Su.

Seung-jo considers having grown up always at the center of things, while Ha-ni decides to believe that she's the center of everything that goes wrong. Espied giving Kyeong-su lessons in romance, Ha-ni, indeed, becomes the center of gossip.

Ha-ni finds Seung-jo working as a waiter alongside He-ra and jumps to the conclusion that they're living together. Solution: she should spend every moment at the restaurant to keep them apart.

As Hwang Geum-hee continues scheming to get her son and Ha-ni together, a new boy enters Ha-ni's life, interested in her, friendly and patient.

An outburst of anger sends Baek Soo-chang to the hospital, forcing Seung-jo to forgo his selected future in order to take over and rescue his ailing father's ailing company.

Devastating news: As the young head of his father's company, Seung-jo may have to marry the sponsor's granddaughter to keep the business afloat. Predictably, Ha-ni mopes, but unpredictably she allows Joon-gu to finally date her.

Seung-jo and Ha-ni agree to marry. Now they must inform those most adversely affected by this decision - He-ra, Joon-gu, and Chairman Yoon.

Shoved into his own wedding, Seung-jo wants to reconsider but marries anyway. Now if he and Ha-ni can just avoid a pair of unpleasant newlyweds on their Honeymoon.

Seung-jo won't register his marriage till Ha-ni passes her nurse's exam, leaving Ha-ni to feel put-upon in an unfair world.