Woowon (top) is working as a pizza delivery man as a result of being struck with poverty due to his father's debts. One building is famous for the rich people who give generous tips (tipping is not customary in Korea), so people at the shop are eager to delivery there. One time, Woowon delivers to Seo-an (bottom), who lives at the top of the building and was not expecting it and did not tip him. Seo-an is the wealthy heir to a company, but suffers from severe agoraphobia and panic disorder, causing him to stay home mostly and avoid social situations, but he feels a weird connection to Woowon. Shortly later, he sees Woowon being hassled by someone who gets him into an accident, and takes the opportunity to help him out of the situation. Woowon became injured in the accident, so Seo-an helps him deliver until his arm is healed. After that, their relationship begins from there, and Woowon is empathetic and understanding of Seo-an's mental illness.
The Pizza Delivery Man and The Gold Palace