When two weddings are accidentally booked on the same day at the same venue, each wedding party is tasked with preserving their family’s special moment while making the most of the unexpectedly tight spaces. In a hilarious showdown of determination and courage, the father of the bride (Will Ferrell) and the sister of the other bride (Reese Witherspoon) find themselves in a chaotic showdown as they stop at nothing to throw an unforgettable celebration for their loved ones.