Susan treats Ben to a Christmas hotel break supposedly just for the two of them, but she has secretly invited other family members, including Alfie and his strange Uncle Idris and Michael's left-wing girl-friend Gwen. Abi is also working as the hotel's masseuse. Crystal, a patient besotted with Ben, arrives to say her jealous boy-friend has escaped from jail and is on his way to kill Ben. Fortunately he is caught but Ben still has to face the rest of the family, though all ends well in a room full of presents.
It's Christmas 2039. Ben looks like an octogenarian but Susan, thanks to moisturisers, still looks middle-aged. Janey has ballooned, Mikey has lost all his hair and is resorting to an ill-fitting wig and Roger, thanks to an accident at the zoo, is just a head in a glass case. Kenzo is late in arriving, giving the family time to look back on some of their worst Christmas days ever, though the worst one of all time, as Kenzo reminds them, was when Uncle Richard came to stay.
The pupils of St Bernadette's and the madcap Mr Poppy are back! When their new teacher Mr Shepherd loses his memory as well as Archie the Donkey, it's up to them to save the day and reunite him with his fiancée Sophie in New York. Prepare for a race against time, fantastic flash mobs and plenty of Christmas fun on their greatest adventure yet.
