Parenting and marriage are becoming tougher and tougher for Toula (Nia Vardalos) and her husband Ian. Not only has their relationship lost some of its spark, but they're also dealing with a rebellious teenage daughter who clashes with Greek traditions. On top of that, Toula must contend with aging parents and the endless needs of cousins and friends. When a shocking family secret comes to light, the entire Portokalos clan makes plans to come together for an even bigger wedding than before.