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Jeong-eun is embarrassed that her mother, who is suffering from dementia, wants to meet and call her sister from who was separated with due to the Korean War. However, Jeongeun accidentally receives a wrong call from a North Korean woman and is asked a favor. Jeong-eun is embarrassed that her mother, who is suffering from dementia, wants to meet and call her sister from who was separated with due to the Korean War. However, Jeongeun accidentally receives a wrong call from a North Korean woman and is asked a favor.