Nearing the age of 40, Nam Gung-Sang (Kim C) is content with his bachelor life and working at his mid-level office job. He is particular about certain things and somewhat condescending towards those around him. Lee Eun-Hong (Woo Hee-Jin) works at the same comapny as Nam Gung-Sang and similar in age. After attending a funeral for a co-worker, they wake up in the same bed. Meanwhile, Nam Gung-Sang becomes interested in younger co-worker Yu Ji-A (Shin So-Yul).
