Cha Young-min is an arrogant, brilliant cardiothoracic surgeon at Eunsang University Hospital driven solely by prestige and success. His cold demeanor contrasts sharply with Go Seung-tak, a privileged first-year resident who happens to be the grandson of the hospital’s founder. Seung-tak possesses vast theoretical medical knowledge inherited from his family’s legacy, but freezes completely at the sight of a surgical scalpel, lacking any practical nerve or physical aptitude.Young-min’s life shatters when he is targeted in a sinister conspiracy orchestrated by the corrupt hospital vice-director, Chairman Han, and Young-min’s treacherous ex-girlfriend, Han Seung-won. Ambushed and critically injured in a staged car accident, Young-min falls into a deep coma. However, his spirit separates from his physical body, leaving him as a wandering "coma ghost." Wandering the hospital, he discovers to his utter horror that the only person capable of seeing and interacting with his spirit is the incompetent, cowardly Seung-tak.Trapped between life and death, Young-min realizes that his physical body is under constant threat from the conspirators trying to ensure he never wakes up. Desperate to protect his patients and save his own life, Young-min resorts to desperate measures: he possesses Seung-tak’s body. Because Seung-tak can host spirits, Young-min uses the young resident's physical form to perform miraculous, high-stakes surgeries, secretly rescuing dying patients while hiding the bizarre phenomenon from the rest of the staff.Initially, their forced partnership is fraught with friction, ego clashes, and hilarious miscommunications. Young-min is infuriated by Seung-tak’s flippant attitude, while Seung-tak is terrified of being controlled. However, as they navigate numerous life-or-death crises together, their dynamic evolves into a profound mutual respect and brotherhood. Seung-tak gradually overcomes his trauma and gains the courage to operate independently, while Young-min learns empathy, warmth, and the true meaning of saving a life rather than just hunting accolades.Complications multiply when other hospital spirits intervene, and Young-min’s health deteriorates further. The duo must unmask
the corruption within the administration, expose the chairman’s malicious plots, and protect Oh Se-jin, Young-min’s former love who regrets her past betrayal and desperately fights to protect his comatose body. Culminating in an emotional and dramatic climax, the conspiracy is dismantled, justice is served, and Young-min miraculously awakens from his coma. Having undergone a complete spiritual and emotional
transformation, he returns to the operating room, this time as a compassionate healer, forever bonded with Seung-tak in friendship and medical excellence.