Musical animated adventure featuring the voices of Nicole Kidman, Elijah Wood and Robin Williams. In the freezing Antarctic, Emperor penguins find their soul mate through their own unique "heart song". Unfortunately for young bird Mumble, he can't sing a note, but he can tap dance brilliantly. Social rejection soon follows, leading his "happy feet" to be blamed for a colony-threatening fish famine. Determined to prove his worth, Mumble heads off on a perilous journey to discover the truth about what has happened to the fish stocks.