A quiet student by day, a romance novelist by night, Eui-ju is inspired when four gorgeous teachers appear: icy Woo-su, lively Da-ju, gruff Gi-jeon, and gentle Dong-ju. She writes them into her new novel, which blows up overnight! But her secret is discovered by Woo-su, her worst enemy since day one. She accepts his deal to protect her secret, but can she finish this novel unscathed?

Two high school boys growing and getting mature together. They are thinking about their dreams and future.