Two school troublemakers decide to become better students. They visit their suspicious teacher everyday after school to ask questions and offer help. When their teacher falls ill due to overwork and is hospitalized, they decide they must find a way to show their appreciation.

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The old Yoo works as a Korean traditional group song's singer at a public cemetery. He was born at the North Korea, and watched killing scene of his wife and children while crossing over the border to South Korea. He comes to South Korea alone and suffers from a lot of difficulties, and becomes a singer of group song at the public cemetery. He adopts six years old girl named Oki, who wandered at the cemetery, as his daughter. Until his daughter becomes adult to get married, he does not married again and watch a lot of the death. All of the sorrows and complaints are in vain in front of the death. He also dies hearing the songs of other group song's singers who worked together.