When two weddings are accidentally booked at the same venue on the same day, each bridal party is challenged to make the most of the unexpected spaces and preserve their family’s special occasion. In a hilarious battle of determination and seriousness, the father of the bride (Will Ferrell) and the sister of the other bride (Reese Witherspoon) clash in chaos as they stop at nothing to provide an unforgettable celebration for their loved ones.