Soohan is an average(?) office worker whose purpose in life is to live a peaceful, ordinary life. He works at a small ad agency that's about to go bankrupt anytime soon. One day, the president of the company introduces a new employee named Taeyul who was scouted from an industry-leading firm to vitalize the company. From the first encounter, Soohan doesn't like Taeyul... because Taeyul reminds Soohan his first love.