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 by making the most of the unforeseen 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) chaotically go head-to-head as they stop at nothing to deliver an unforgettable celebration for their loved ones .