Multiple misunderstandings build up between Hee-jin, Jae-yeol, and Ji-won, causing Hee-jin to believe that Jae-yeol still has feelings for his ex, Yeo-reum. Meanwhile, the campus bustles as the school festival approaches with the Confession Tree event, planned to be hosted by Yeo-reum.

Jae-yeol and Ji-won's war of nerves escalates after the incident of the Confession Tree. While Jae-yeol is tormented between Hee-jin and Yeo-reum, he finds out about the truth behind his breakup with Yeo-reum. Hee-jin and Ji-won keep running into Jae-yeol and Yeo-reum, and they end up sharing a meal together at the same table.

Just as Hee-jin and Jae-yeol find happiness, disaster strikes Hee-jin's family finances and her crucial art project is jeopardized. Reeling from setbacks and leaning on Ji-won for support, she unknowingly fuels Jae-yeol's suspicions. Their fairytale beginning crashes hard against grim reality.