Following the wedding of young Jenny Piper and Arthur Fitton (Hayley Mills and Hywel Bennett), a boisterous reception is thrown in a local pub during which the newlyweds are treated to a barrage of well-intentioned but crude ribaldry. The couple returns to the Fitton home for their first night together before departing for a honeymoon in Majorca, but they are joined by some of the wedding guests, who keep the party going until the early hours of the morning. Worse still, when the children are eventually allowed to retire, their bed collapses due to a practical prank.