Song Seung Hun showed a great discomfort through his headache during the surgery of Park Min Young's breast cancer surgery.
On the episode aired on the 15th, Heung-sun-goon gets his people around and tries to get rid of the first vice-premier.
Jin Hyuk tells Young Rae that he wants to do her breast cancer surgery but she refuses because of her marriage and that if he saves her, he can't go back to where he came from.
But hearing this, Jin Hyuk knew that he really won't be able to return to his time if he saved her but he says, "I am saving a person that I can save and that is why I came here", and did not give up on Young Rae.
To this, Young Rae agreed to get the surgery and they successfully finished the surgery. But during the surgery, Jin Hyuk expressed a lot of pain in his head and it overlapped with the pain that he had experienced while time traveling from the future to Chosun. He also remembered what Chun Hong said about if he saves someone that is not supposed to live, one will die.
When he couldn't continue on with the surgery, he asked the helper to finish for him.
And on this day, when Jin Hyuk was on his way to see Heung-sun-goon, he saw that Heung-sun-goon got shot by Kyung Tak and realized that he had changed history again.
