Hyper Knife

Hyper Knife is a South Korean medical thriller television series directed by Kim Jung-hyun and written by Kim Sun-hee. The series, which premiered on Disney+ in March 2025, explores the intense and professional rivalry between two neurosurgeons.

Plot

The story centers on Jung Se-ok, a former medical prodigy who was once considered a genius in the field of neurosurgery. Her career takes a drastic turn after she is permanently expelled from the operating room by her mentor, Choi Deok-hee, a world-renowned neurosurgeon. Following her downfall, Jung Se-ok begins working as a shadow doctor in an illegal medical setting. The narrative follows their eventual reunion and the complex professional and personal conflict that ensues as they navigate their shared history and the high-stakes world of neurosurgery.

Cast and Characters

The series features a large ensemble cast, including:

• Park Eun-bin as Jung Se-ok
• Sul Kyung-gu as Choi Deok-hee
• Park Byung-eun as Han Hyeon-ho, an anesthesiologist
• Yoon Chan-young as Seo Young-joo