When two weddings are accidentally booked on the same day at the same venue, each bridal party is challenged with preserving their family’s special moment while making the most of the unanticipated tight quarters. In a hilarious battle of determination and grit, the father of the bride (Will Ferrell) and sister of the other bride (Reese Witherspoon) chaotically go head-to-head as they stop at nothing to uphold an unforgettable celebration for their loved ones.