Step into the morally grey world of Hyper Knife, a 2025 South Korean medical crime thriller. The series follows Dr. Jung Se-ok (Park Eun-bin), a brilliant neurosurgeon stripped of her license and haunted by her past. Driven by a fierce ambition to push the boundaries of neuroscience, she performs high-stakes, illicit surgeries in the shadows. Her dangerous path violently collides with her former mentor, the renowned Dr. Choi Deok-hee (Sul Kyung-gu), triggering an explosive battle for power and revenge where the pursuit of radical medical advancements blurs every ethical line.