The drama will be an original story about the past of the brilliant mercenary doctor Black Jack, during his days as a medical student. In particular, the story will address questions such as why Black Jack does not have a medical license, why he seeks such expensive fees for his services, and how he is connected to his fateful rival Dr. Kiriko.On Christmas day, a bomb explodes in a shopping mall. The explosion was perpetrated by a serial bomber. A 9-year-old boy Kuro Hazama and his mother Mitsuko (Naho Toda) are seriously and transfered to a university hospital.With the elite skills of surgeon Dr. Jontaro Honma (Masachika Ichimura), Kuro survives, but is shocked to learn his mother is in a coma. Dr. Honma tells Tokio that when medical science advances, Michiko might one day awake. Tokio decides then to become a doctor.15 years later, 24-year-old Kuro is a medical student and his mother is still in a coma. Kuro researches ways to awaken his mother. One day, on the street a medical student named Yuna (Riisa Naka) is about to give aid to a woman whose heart has suddenly stopped. But at that time, Kuro tells Yuna that there is a measure which should be done before giving cardiac aid. With Kuro's advice, the woman's life is saved. Meanwhile, Yuna's father is the chief director at the university hospital. A few days later, Tokio and Yuna meet again. Yuna (whose father is the chief director at the university hospital) has become interested in Kuro. She discovers that Kuro, without a license, treats patients who were rejected from the hospital ...