Jim Santos is the biological father of Megan O'Hara, and donored half of his liver to her. When Megan needed a transplant, her parents, Steve and Val, are told that they could donate a portion of their liver to Megan. Both parents agree to be tested. Miranda and Dr. Jordan have the results from Steve and Val, neither of them are a match. As the leave the room, they discuss the fact that it is impossible for that they are both her parents, the blood types just don't add up. Megan's biological father, Jim Santos is found and bought into the hospital. The situation is explained and he states he cannot help. He explains that he has a family and he can not miss work. Miranda finds Steve outside of the hospital and they talk. Steve comes back into the hospital and finds Jim. Jim decides that he needs to help Megan and agrees to the donation.