Jan Di, a poor yet feisty schoolgirl finds herself embroiled with a group of rich, popular boys who consider the school their own personal playground.

With her brand-new makeover, Jan Di turns more than one head, which leads Jun Pyo to take drastic measures in his jealousy. Meanwhile, Ji Hoo and Seo Hyun navigate their past, and Seo Hyun and Jan Di share a meaningful moment that has unforeseen consequences when Ji Hoo thinks Jan Di is butting into his life.