Happy Feet. Emperor penguins are born to sing. All except young Mumble, who was born to dance… tap dance. Such un-penguin-like behaviour eventually gets Mumble kicked out of Emperor Land and into the big cold world. Joined by his Adelie Amigos and an all-knowing Rockhopper penguin names Lovelace, Mumble embarks on an epic journey and ultimately proves that by being true to yourself, you can make all the difference in the world.