"I deliver everything that the post office service does not handle." Eun-ha, who is a normal junkyard employee, secretly works as a delivery clerk that deals with unusual delivery requests. One day, Eun-ha heads to Seoul to pick up a client who is involved in a gambling crime that wants to flee overseas. However, Eun-ha meets the client's young son at the pick-up point, instead of the client himself. Kyeong-pil, a current police officer who is actually masterminding the whole gambling crime, chases after the missing child who has the security key to the bank account that holds 30 million dollars.