 When Matthias realizes that Sebastian wants to be a part of his daughter's life, he is alarmed and fears to lose her to the man who once slept with his deceased wife.The two get into fights over and over again and Sebastian even plans to get custody, when he needs to realize that because of Katja and Matthias' marriage he has no legal claim on Christina.Matthias and Sebastian then try to work out a visit agreement, but Sebastian oversteps by getting to much fatherly feelings for the girl.