There are hundreds of manga about skillful doctors already, but among them "Doctor Enma" offered a different kind of entertainment. Mitsuya Enma was known as a "Speed of Light Surgeon" that can conduct any operation successfully in a short time. The only person he couldn't save with his hands is his little sister, forcing him to involve with drugs trafficking to collect treatment money. He was arrested and put in a cage, but one day, a mysterious, beautiful woman, Kanon, helped him jailbreak on one condition; to serve as a black-market doctor that has to do a time-limited illegal operation with Kanon as the assistant.