"Black Jack" is a medical drama anime based on the manga by Osamu Tezuka. The series centers on the enigmatic and highly skilled unlicensed surgeon, Black Jack, whose real name is Kuroo Hazama. After surviving a tragic childhood accident that left his body scarred and his mother dead, Black Jack becomes a brilliant but morally complex surgeon. He operates outside the conventional medical system, charging exorbitant fees for his services, often treating patients who are desperate or have been abandoned by mainstream medicine.

The narrative unfolds through episodic stories, each focusing on different patients and their unique medical conditions. Black Jack's unparalleled surgical skills and unorthodox methods frequently place him at odds with the medical establishment, yet his deep sense of justice and compassion for the suffering drive him to take on cases others deem impossible. His assistant, Pinoko, a young girl created from the tissue of a teratoma, provides both emotional support and comic relief, balancing the often grim tone of the series.

Throughout the series, Black Jack encounters a wide array of characters, from corrupt officials and wealthy elites to ordinary people facing extraordinary medical crises. His interactions often reveal the ethical dilemmas and societal issues surrounding healthcare, such as the commodification of medicine, the limits of medical ethics, and the human cost of scientific advancement. Despite his cold exterior and mercenary reputation, Black Jack's actions frequently demonstrate a profound commitment to saving lives, regardless of the personal or professional consequences.

The series explores themes of life, death, and the moral ambiguities of medical practice, often leaving viewers to ponder the ethical boundaries of science and humanity. Black Jack's character is defined by his contradictions: a man who operates in the shadows yet seeks to bring light to those in despair, a healer who is both revered and reviled. The episodic structure allows for a diverse range of stories, each contributing to the overarching exploration of what it means to be a doctor and the price of wielding such power.