Set deep in Antarctica, into the land of Emperor Penguins, where each needs a heart song to attract a soul mate, a penguin is born who cannot sing. Our hero Mumble, son of Memphis and Norma Jean, is Set deep in Antarctica, into the land of Emperor Penguins, where each needs a heart song to attract a soul mate, a penguin is born who cannot sing. Our hero Mumble, son of Memphis and Norma Jean, is the worst singer in the world...however, as it happens, he is a brilliant tap dancer!