The original Happy Feet and the sequel in one double pack. Happy Feet. In the great nation of Emperor Penguins, deep in Antarctica, you're nobody unless you can sing, which is unfortunate for Mumble, who is the worst singer in the world. He is born dancing to his own tune tap dancing. Happy Feet Two. Mumble and Gloria now have a son of their own, Erik (EG Daily), who is struggling to find his own particular talents in the Emperor Penguin world. But new dangers are threatening the penguin nation, and it's going to take everyone working--and dancing--together to save them.