British comedy co-written by and starring Catherine Tate. Nan (Tate) receives a letter from her estranged sister Nell (Katherine Parkinson) who is dying and would like to reconcile. Tricked by her grandson Jamie (Mathew Horne) with the promise of a spa day in Coventry, they embark on a road trip together from London to Ireland to see Nell. While Nan gets into trouble, goes clubbing and gets high, the reason for the estrangement is revealed. Will the sisters reconcile before it's too late?