A wall had formed between the signature white tiles of the hospital and the rough flooring of the warehouse. This was the first time he felt the fourth wall from up close. Hyungseok glimpsed at the urgently shouting Han Gaeul before taking a glance at the staff who were looking at the actors from outside the set. He could see over fifty people in the group of staff at a glance, but he could not hear a breathing sound from them. The actors, who had been joking around just 3 minutes ago, had turned into doctors and nurses who were doing their best to give the patients emergency treatment while walking around the emergency unit everywhere. The staff also maintained their tension as they did their work. Actors did what actors had to do, and the staff did the same. Watching the two entirely separate workspaces fit each other like two neighboring puzzle pieces to complete this scene gave him a sense of surprise. Although this feeling would disappear due to simple labor once NGs started flying everywhere, this first shot felt very special. Hyungseok watched the actors that moved according to the lines that the director showed them during the rehearsal and he too became immersed in his own acting. He wanted to...