Beom Gyu-hwa, who has lived his whole life thinking he's an alpha, receives a high-paying part-time job offer while working to earn tuition as usual. The part-time job location is a Sehan hotel that he really wanted to avoid, but he goes to work thinking it was only for one day. However, while working, the pheromones start to feel unpleasant and he starts to feel unwell. And there, he meets Han Haesoo, one of the people he doesn't want to meet, and ends up spending one night with him due to the hit... “You’re…in heat, right?”