A lowly pencil pusher working for MI7, Johnny English is suddenly promoted to super spy after Agent One is assassinated and every other agent is blown up at his funeral. When a billionaire entrepreneur sponsors the exhibition of the Crown Jewels—and the valuable gems disappear on the opening night and on English's watch—the newly-designated agent must jump into action to find the thief and recover the missing gems.
When an American family is invited to spend the weekend at the idyllic country estate of a charming British family they befriended on vacation, what begins as a dream holiday soon warps into a snarled psychological nightmare.