In You Who Came From the Stars, episode 12, Cheon Song Yi(played by Jun Ji Hyun) saved Do Min Joon(played by Kim Soo Hyun). Song Yi has been calling Min Joon on the phone but he did not answer. She looked for him everywhere and eventually found him lying on the floor of his house bleeding. She tried to help him go to the hospital, but as he refused to go, she called Jang Young Mok(played by Kim Chang Wan) instead. When Young Mok arrived, he thanked Song Yi and also told her that Min Joon will be leaving soon. Song Yi was shocked to hear this.