Na mrzli Antarktiki je glasba vse, s čimer si lahko cesarski pingvini popestrijo svoj dolgočasni vsakdan. Prav vsi med njimi pojejo kot največji operni pevci, na ta način pa si tudi najdejo svojo boljšo polovico. Edina izjema je mladi pingvin Mumble, ki ni prav nič nadarjen za petje, zato pa zna zelo dobro plesati. Toda ko mora očarati lepo pingvinko Glorio, v katero je do ušes zaljubljen, Mumble spozna, da ji ne more zapeti svoje srčne pesmi, po kateri Gloria tako zelo hrepeni. Bo našel pot do Glorijinega srca?
This is the story of a little penguin named Mumble who has a terrible singing voice and later discovers he has no Heartsong. However, Mumble has an astute talent for something that none of the penguins had ever seen before: tap dancing. Though Mumble's mom, Norma Jean, thinks this little habit is cute, his dad, Memphis, says it "just ain't penguin." Besides, they both know that, without a Heartsong, Mumble may never find true love. As fate would have it, his one friend, Gloria, happens to be the best singer around. Mumble and Gloria have a connection from the moment they hatch, but she struggles with his strange "hippity- hoppity" ways. Mumble is just too different--especially for Noah the Elder, the stern leader of Emperor Land, who ultimately casts him out of the community. Away from home for the first time, Mumble meets a posse of decidedly un-Emperor-like penguins--the Adelie Amigos. Led by Ramon, the Adelies instantly embrace Mumble's cool dance moves and invite him to party with them. In Adelie Land, Mumble seeks the counsel of Lovelace the Guru, a crazy-feathered Rockhopper penguin who will answer any of life's questions for the price of a pebble. Together with Lovelace and the Amigos, Mumble sets out across vast landscapes and, after some epic encounters, proves that by being true to yourself, you can make all the difference in the world.