Black Jack is an unregistered doctor with a mysterious past who works with his small assistant Pinoko, who has a massive crush on him. Together they tackle rare and bizarre medical cases, sometimes dangerous or unknown, that others can’t solve. A medical genius, he can save almost any patient, as long as they can pay. He is renowned worldwide among physicians and scientists. A scientist by nature, he demands proof before believing, yet he is often surprised when love and nature outweigh the science he relies upon.