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Lee-won, a university student majoring in acting, has a rivalry with Ji-oh, a directing major. Despite their constant bickering, they often have to work together. Unbeknownst to Lee-won, his younger sister is writing a web novel where he and Ji-oh are lovers. When he discovers her secret, he vows that if he secretly likes Ji-oh, the novel’s storyline should come true. As they spend more time together, Lee-won begins to question if his feelings for his enemy are becoming something more.