David seeks sexual advice from Adam, saying that Karen just doesn't arouse him anymore; Pete seeks to resume intimacy with Jenny now that their baby has been born.

David and Karen invite the other couples to a black tie charity dinner where David spends the evening networking, but Jenny gets drunk and starts a fistfight with his female boss. Meanwhile, Rachel reveals a secret to Karen.

Adam has not heard from Rachel for six months and is feeling broody. Jenny and Pete's marriage seems to be in trouble.

David opts to stay home and take care of his son rather than get a new job. Rachel comes back without a baby. Pete learns that Jenny no longer loves him.

Rachel returns to her old job and starts dating a younger man. Pete and Amy find solace together. Jenny convinces Adam to reply to a lonely hearts ad.

Pete is afraid of his fast moving relationship with Jo, who's visa is about to expire. Adam and Rachel start to fight about the baby's name and their relationship. Karen starts an affair, while David is occupied with work.