All is not well in the Marsden household as David and Karen struggle to come to terms with David's infidelity. Adam persuades him the only way to get back into Karen's good books and the marital bed is by becoming the man Karen always wished he was. Unhappily for David, his efforts only serve to make their marriage more fraught than ever.

David and Karen try to solve their problems in very different ways.

Karen is forced to face up to her drinking problem.

David and Karen discover their marital discord is taking its toll on Josh.

Adam and Rachel are distraught to learn their adoption agency will not allow them to go ahead with adopting Laura now that Rachel is pregnant. Pete finally rid of David and his mother finds himself with another house guest - Jo. Karen returns to the workplace after meeting Mark, a publisher, at a drinks party.

Rachel has gone to visit Jenny in New York and Adam, frightened by the prospect of imminent fatherhood, decides to have one last hurrah. However it all gets a bit out of hand when he finds himself being propositioned by a very attractive woman.

Adam is amazed to see how big Rachel has become while she's been away. They disagree over the baby's name and Rachel is hurt by Adam's sudden loss of interest in sex.

The gang head for Australia to attend Pete and Jo's wedding. Rachel is particularly excited about the trip as it'll be the first time she's seen her younger sister who lives in Sydney for ages. David meanwhile is determined to give Karen the holiday of a lifetime to seal their apparent rapprochement once and for all.