"Kang Ji-han, the epitome of a strict kid with good looks that could be mistaken for a celebrity, good grades, and friendly interpersonal relationships, has a secret: he is in a sexual relationship with Ji Jin-young, a senior in his department whom he met via a gay app. But they say even monkeys sometimes fall from trees. At a department club dinner, Ji-han gets drunk and misunderstands his target, sharing a deep kiss in an alley with Moon Hui-seop, an otaku and student from the same department. Since that day, Hee-seop has followed Ji-han like he was stalking him... "Ji-han, don't kiss that person. You're dating me," Ji-han is confused by the nerdy guy's way of thinking, thinking they're dating after just one kiss. Men with bushy hair, old-fashioned plaid patterns, and powdery skin wearing glasses are perfect! I hate Ji-han. I thought I would never get involved with Hui-seop, who is a standard nerdy guy, but when I peeled it back, I found out that he is a lottery guy who is not scratching anything...?!? With the appearance of Hee-seop, Jin-young's sexual relations began to increase. I absolutely refuse to fall in love! Who is the man who will change Ji-han's heart in the trio's confusing relationship?"