When two weddings accidentally happen on the same day and at the same location, each bride and groom are faced with the challenge of capturing their family’s special moment while making the most of their unexpected proximity. In a hilarious battle of determination and courage, the father of the bride (Will Ferrell) and the sister of the other bride (Reese Witherspoon) clash chaotically and stop at nothing to give their loved ones an unforgettable celebration.