An elderly man named Han P Joo, who works part-time as a server at a restaurant, is loved by his young co-workers for his kindness and good manners. During Christmas, he dresses up as Santa to entertain customers. His closest co-worker, a young man named Ingu, notices Han's change in mood when he receives a phone call from his daughter. Han rushes to the hospital to see his deceased wife. Later, Han reveals his plan to seek revenge on five people who destroyed his family during Japan's reign in Korea.