Britain's favourite 30-somethings are reunited for this hugely popular series, which follows the trials and tribulations of marriage, sex, friendship and parenthood, with both hilarious and poignant results. The new series opens with the aftermath of series four's tear-jerking climax in Australia. Rachel gave birth to a healthy baby boy after months of turmoil for her and Adam, Pete and Jo tied the knot after convincing everyone - including themselves - that they were meant for each other and David was left reeling after Karen was forced to confess her affair. We pick up six months later on their return from Sydney. Adam and Rachel embark on family life with their little boy Matt, with realisation dawning on Adam that baby definitely makes three. Pete and Jo return from Australia to find life with mother-in-law is not quite as sunny as Sydney. David And Karen discover that an amicable divorce is not as easy as it might seem, and Ramona is taking a few siestas with a local lifeguard.