Cha Yeong-min, an on-demand heart surgeon, meets his match when a well-connected newcomer joins his team.

An out-of-body experience compels Ko Seung-tak to take the lead in the operating room; everything goes awry after he comes to his senses.

A strange partnership between Yeong-min and Seung-tak begins; Yeong-min learns that a trusted colleague was engaged in a malicious scheme.

Word of Seung-tak's talent spreads, putting him in a precarious position; a patient suffers roadblocks as Yeong-min is unavailable to treat him.

Yeong-min and Seung-tak form a pact to keep up the act long enough to save a few more lives; on the day of an important surgery, Yeong-min faces delays.