Colin and Jane have decided that their marriage isn't working and that the best thing is to separate. This could be tough on their children, Joe and Emily, but their parents are civilized about the whole thing and determined to remain friends. In fact, after the split their relationship improves considerably. Jane, a nurse, embarks upon a new relationship with Roger, a single parent of three children, the terrible trio of David, Felicity and Robbie. Colin, meanwhile, has started to see Jennifer, the therapist he and Jane consulted when trying to work through their problems.