Seo Hyunsoo has a steadfast belief: people are dishonest and will always let you down. This belief is quickly confirmed when, at his first company dinner following his transfer to a different department, he catches his coworker, the overly chipper Baek Youngchan, engaging in inappropriate behavior in the men's restroom. Despite Hyunsoo's desire to avoid him, Youngchan appears determined to stay by his side. Can Hyunsoo escape the disorderly influence of his new colleague, or will these two contrasting coworkers discover that opposing personalities can draw each other in?