Fifty-year-old Yuria has a quiet life teaching embroidery classes in her home, where she lives with her writer husband and his mother. Then one day her world is turned upside down when husband has a subarachnoid hemorrhage and upon arriving at the hospital, Yuria is met by a tearful young man who announces that he is her husband's lover.
Two years ago, Noda Tetsuya worked as a doctor. He was a medical intern trained by cardiac surgeon Terashima Koichi. One day, Koichi and his wife were murdered. At that time, Tetsuya lost his right hand. Koichi and his wife left behind their 8-year-old daughter Terashima Yui. Now, Noda teams up with Yui to lead an illegal secret surgery team, whose ultimate purpose is to find the truth behind the death of her parents. To hire the black market surgery team, a fee of 100 million yen in cash is required as well as an NDA requirement and chocolate. The team are able to save the lives of patients no matter the circumstances, but a newspaper reporter begins to chase after them.