It's Carol and Trevor's 40th wedding anniversary. Joyce has organised a celebratory lunch at an upmarket gastropub. Her carefully-laid plans are thrown when Maureen turns up with her mum Joan, who, like Dr Jekyll, is very nice until she's had a drink.

Then Carol announces she's made a decision that could ruin not just this anniversary but every one to come - unless Joyce and Maureen can change her mind in time. Show less