Known by the moniker "Black Jack," Kuroo Hazama has established himself as a celebrated medical practitioner, despite practicing without a license. He collaborates with his assistant, Pinoko, to save countless lives, albeit at a substantial cost, prompting some to brand him as self-centered and lacking empathy. However, Hazama's unwavering dedication to healing his patients and his exceptional expertise cannot be disputed. This captivating medical drama delves into the murky sphere of illicit healthcare, as Black Jack shirks regulations and statutes to cure the most obscure and rare diseases, regardless of the risks he faces.