When two weddings happen to be planned for the same day and location, each wedding party faces the challenge of preserving their family’s special moment while making the most of a small, unplanned space. In a hilarious battle of determination and courage, the father of the bride (Will Ferrell) and the sister of the other bride (Reese Witherspoon) clash chaotically as they stop at nothing to plan an unforgettable celebration for their loved ones.