When two weddings are accidentally scheduled for the same day and location, each wedding party is challenged to preserve their family’s special moment and make the most of the small, unplanned space. In a madcap battle of determination and courage, the father of the bride (Will Ferrell) and the sister of the other bride (Reese Witherspoon) face off in chaos as they stop at nothing to plan an unforgettable celebration for their loved ones.