A New Year's party is thrown by the Bairds in traditional Scottish style with their two sons, unpredictable sister Caroline and neighbours. Joining them are aspirational friends Colin and Cathy; Norwegian neighbours Henning and Nina; Ian's exuberant and outgoing partner Tony; and teenager Sophie, who's been left home alone while her parents are away. Eric and Beth hope the highlight will be the return of their son from Iraq. As drink flows, tempers fray, and the legendary steak pie comes out.