At a tea manufacturing company, Juwon, a new employee in the product development department, falls in love with his superior, Assistant Manager Yeol, at first sight.

One day, as Juwon secretly continues his unrequited love, Yeol reprimands Juwon for spraying perfume in the product development department. Juwon denies it, but Yeol continues to sniff Juwon whenever they meet, saying that he smells something.

In this way, a subtle procedure called “smell inspection” has arisen between Juwon and Yeol. Juwon is troubled by the daily inspection time as his body instinctively reacting to his beloved Assistant Manager’s closeness…