After Marlene tells Cathy about the distant relationship she has with her own two daughters who Cathy didn't even know existed, Cathy decides she and Sean need to go visit their own father, who she feels they don't see often enough. Sean reluctantly goes as he openly dislikes their father, who didn't give him the time of day while he was growing up. Cathy, on the other hand, loves their father, as she was seen as the good one during her and Sean's childhood. This road trip ends up being one of discovery for both Cathy and Sean, those discoveries which affect the way she ultimately relates to her father, especially in light of the way he relates to her, which is the same way he's related to her, Sean and their now deceased mother for their entire lives. Meanwhile, Paul is at the house being Dad to Adam during Cathy's absence. But it isn't quite clear if there is an adult figure between the two.