Because of his father's gambling and bad investments, Woo-won has been spending much of his life trying to pay off the debt. Looking for a new job, he becomes a pizza delivery man at a pizzeria in a fancy neighborhood. Seo An lived his life under his controlling, perfectionist father. Eventually, he developed a social anxiety and panic disorder, quitting his job and shutting himself off from people. Woo-won's small act of kindness leads to a series of encounters that makes them grow closer to each other.