Toula Portokalos (Nia Vardalos) is an unmarried thirty-year-old who lives in Chicago and works in her father's Greek restaurant. When she meets and falls for high school teacher Ian Miller (John Corbett), a quick makeover and some careful manoeuvring is all it takes for the pair to start dating. But Toula's parents, Gus and Maria, are shocked to discover that Ian isn't Greek and begin putting obstacles in the couple's path.