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.

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.