Hankook University's Seo Jihyeok is the most popular professor on campus with female students. Because of this, he's had trouble finding a T.A. who can get the job done and not fall in love with him. The dean of his department thus decides to bring in Yoon Heemin as his new T.A. Perfect at her job, she also immediately tells Jihyeok that she has zero interest in him. Although happy to have a competent aide, things take a turn when Jihyeok realizes he might be the one falling in love this time.