Ji Wan is a child prodigy who was admitted to a science high school when she was 12 years old, and under her mother's strict tutelage, her days were filled only with her studies. The mature and reticent Ji Wan meets Hyun Chu one day, an untalented but warm and pure-hearted man in his 40s who had recently lost his job and is looked down upon by his wife. As Ji Wan helps him with his problems, she finds in Hyun Chu a friend to whom she can voice her thoughts.