"Old Partner" is the story of 30 years companionship between a 40-year-old Ox and an 80-year-old man. Neither time nor civilization can go against their companionship! At 80 years old, Choi has an old ox that has worked for him for some 30 years. However, there's something special about the way Old Choi treats this ox, which is so worn-out that it might be dead any minute. The old man is single-mindedly focused on the ox, instinctively turning to the beast when he hears the cowbell even though he's nearly deaf. One spring day, however, old man Choi learns that his ox only has a year to live, which will make big troubles for him.