Hyper Knife is a gripping South Korean medical crime thriller directed by Kim Jung-hyun and written by Kim Sun-hee. The series stars Park Eun-bin as Dr. Jung Se-ok, a once-brilliant neurosurgeon who has fallen from grace, and Sul Kyung-gu as her enigmatic former mentor, Dr. Choi Deok-hee.

The story follows Jung Se-ok, who, after losing her medical license due to a tragic incident, resorts to performing illegal surgeries in secret. Her life takes a dramatic turn when she crosses paths with Dr. Choi, the very person who played a role in her downfall. Their reunion ignites a tense battle of wits and power, as both characters grapple with their past and the ethical dilemmas of their actions.
The series also features Yoon Chan-young as Seo Young-joo, Se-ok’s loyal ally, and Park Byung-eun as Han Hyun-ho, an anesthesiologist who supports her. With its intense narrative, morally complex characters, and a blend of medical and crime drama, Hyper Knife promises to be a thrilling exploration of ambition, redemption, and revenge.