Bom admits she has feelings for Jae-gyu but refuses to date a parent ever again. Jae-gyu then declares he'll wait until Han-gyul graduates. They agree to keep their distance and stay strictly professional. But despite their firm promise, their jealousy toward each other only grows...

Shinsu High is buzzing with excitement for its biggest event of the year: Sports Day. But without Jae-gyu, the White Team struggles to keep up, and tension slowly tightens across Bom's face. Still bound by his promise to Han-gyul, Jae-gyu can't take part, leaving him frustrated on the sidelines. When Bom finds him, she says something that stirs his already restless heart even more.

Bom's heart freezes over again when she realizes Jae-gyu knows her secrets. She throws up a cold wall and tells him to stay out of her life. Determined to clear up the misunderstanding, Jae-gyu brings out his ultimate move to win her back. Will it be enough to thaw Bom's heart?

Bom glimpses an unexpected side of Jae-gyu and starts to think he might not be so bad after all. Then a shocking rumor begins spreading through town: Jae-gyu isn't Han-gyul's uncle, he's his dad! The news keeps weighing on her, so she decides to confront it head-on.

There's something familiar about Jae Gyu's actions, though Bom can't quite figure out why. Meanwhile, Se Jin disappears, frustrated from always coming in second because of Han Gyul. Bom and Jae Gyu head to Seoul to find her. At a critical moment, Jae Gyu's sudden appearance flips a switch in Bom's memory.

In the small coastal town of Shinsu, Yun Bom immediately piques everyone's curiosity. People can only guess why a successful teacher from Seoul, ended up here. But all attention quickly shifts to Sun Jae Gyu, the town's most notorious figure. His arrival turns Bom's quiet life upside down.