Nia Vardalos returns to write and star in this American romantic comedy sequel. Whilst trying to deal with their own marital and family issues, Toula and Ian (Vardalos and John Corbett) have to attend another big fat Greek wedding. As her 17-year-old daughter Paris (Elena Kampouris) prepares to graduate from high school and go off to college, Toula is shocked to discover that her parents', Gus and Maria (Michael Constantine and Lainie Kazan), were never officially married. With their own marriage on the rocks, an overbearing family ever-present in their lives, and another Greek wedding to attend, will Toula and Ian ever be able to get their relationship back on track?