In the first episode, Henry attempts to help out Cath who is, like many young couples, struggling with astronomical rent rates (Made harder by her husband, Jeremy, enjoying a sabbatical teaching in Lesotho). Yet, when the Bank is far from helpful and the Letting Agent is unwilling to cut them some slack, Henry is forced to face the prospect of selling his house and downsizing to a retirement home. If that's the case, he isn't going to go quietly, so it falls to Margaret and Charles to come up with a rescue package.

In this episode, an unwelcome surprise birthday party for Henry inspires him to go out on the ‘lash' to prove that he's still as fit as he was in his youth. But a misjudged late-night dip in the sea seemingly leaves both him and Charles very much worse for wear. As their symptoms deteriorate, they ultimately end up in hospital, with Henry finding the modern day ‘customer'-orientated NHS too much to bear. Meanwhile, Charles' efforts to distract Margaret from the romantic advances of the suave Dr. Cranmore land him in an isolation ward, and it transpires Cath's new fascination with all things medieval could have a lot to answer for.