Eighty-two-year-old Bernard and his eighty-five-year-old wife, Sharon, are on the last day of their week-long holiday in the small seaside resort of Carmington-on-Sea. A hired trailer van on a holiday park is not the most glamorous way to spend ones sixtieth wedding anniversary. Still, needs must.

After a pleasant day spent first, on the pier, then on the promenade, Bernard and Sharon make their way back to the holiday park only for Bernard's bladder to decide it's had enough, resulting in a desperate dash to the toilet block.

After an annoying encounter in the toilet, Bernard's life spirals out of control...