Dr. Junhyuk Han is a highly skilled emergency physician at Seoul Central University Hospital, where life-and-death decisions must be made in seconds. For years, he has saved countless lives through sheer skill and instinct. But one fateful night, everything changes.
In the midst of a high-pressure cardiac arrest case, Junhyuk sees the impossible—his patient's internal organs become visible, as if through an X-ray. He can pinpoint hemorrhages, detect invisible blood clots, and make near-supernatural diagnoses.