I am Sorry, I Love You Season 1 Episode 2 Episode 2

The doctor tells Mu-hyuk that he could die any time due to the bullet that is stuck in his head. Mu-hyuk leaves Australia for Korea to see his mother, who deserted him when he was a baby. After arriving in Korea, he realizes that his mother is actually famous actress Oh Dul-hee, and her spoiled son is teen idol Yoon.