Whilst Mary is eagerly anticipating the Nesbitts' twentieth wedding anniversary, Rab is tempted into an affair with Susan, the leader of his AA group. When Susan discovers that Rab is married, she throws him over. Will Mary have him back in time for the anniversary celebrations?

Mary and Rab take a romantic trip to the Lake District where Rab becomes an environmental crusader against a local pharmaceutical company.

Rab and Mary have a win on the football pools but it doesn't bring them the happiness that they expected it to.

Shug comes to Govan and wants to start up his own pie shop but he doesn't know about the local pie mafia, who don't like outsiders on their turf.

The Nesbitts appear on an American-style talk show after being accused of annoying their next-door neighbour to death.

Rab recalls his family history after finding his long-lost brother Gash Sr.