Pleasantly plump teenager Tracy Turnblad (Nicole Blonsky) and her best friend Penny Pingleton (Amanda Bynes) audition to be on The Corny Collins Show and Tracy wins. But when scheming Amber Von Tussle (Brittany Snow) and her mother (Michelle Pfeiffer) plot to destroy Tracy, it turns to chaos. Also stars John Travolta, Zac Effron, Queen Latifah and James Marsden.