The Batista Operation is a surgical procedure which is performed on dilated cardiomyopathy (for which cardiac transplantation was used to be the only treatment available) by cutting out the dilated heart and reducing its size. A team of doctors/specialists called the "Team Batista", which was known for their 100% success rate, failed in three procedures consecutively; patients died during the operations.
The "Team Batista" consists of surgeons and specialists of various areas. Taguchi (a doctor of psychosomatic medicine) begins investigating the causes of the patients' deaths with the help of Shiratori who is sent from the Ministry of Health, Labour and Welfare.
Were they really medical errors? Or murders?