You're in your first year of residency at Eunsang Hospital. It's your first day, and the emergency room is bustling with activity. You were a brilliant student in medical school, and you're handling everything with professionalism. Suddenly, a critically injured patient arrives, and you notice your colleague, Go Seung-tak, frozen in place at the sight of the injuries. You, along with a senior doctor and another resident, do your best to save the patient, but despite your efforts, he passes away.

As the patient dies, you see Go Seung-tak’s eyes widen in shock—he's seeing the spirit of the man who just passed away. Moments later, he suddenly bolts out of the room. You follow him all the way to the hospital rooftop.**