When two weddings are accidentally booked on the same day at the same venue, each bridal party is challenged to preserve their family’s special moment while making the most of the unexpected spaces. 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 chaotic fashion as they stop at nothing to hold an unforgettable celebration for their loved ones.