Happy Feet Two

Happy Feet Two is a 2011 computer-animated musical comedy film directed, produced and co-written by George Miller. It's the sequel of the 2006 film Happy Feet and stars Ava Acres, Elijah Wood, Robin Williams P!nk, Meibh Campbell, Lil' P-Nut, Common, Magda Szubanski, Hugo Weaving, Brad Pitt, Matt Damon, Sofia Vergara, Richard Carter, and Hank Azaria. In this film, Erik, the son of Mumble and Gloria, runs away from home and encounters the mighty Sven, a Tufted Puffin that can fly. But when the penguins are trapped by a giant wall of ice and snow, they must stop the apocalypse of Antarctica and gets a chance to see the true colours. 
The film premiered in North American theaters on November 18, 2011, and in Australia on December 26, 2011 The film was released with a 3D Looney Tunes short entitled I Tawt I Taw a Puddy Tat, based on the 1950 children's song of the same name, starring Sylvester and Tweety. Another Looney Tunes short, Daffy's Rhapsody, starring Daffy Duck and Elmer Fudd, was supposed to premiere with the film, but was switched in production. That short instead premiered with Journey 2: The Mysterious Island in 2012.
Plot
Erik, son of Mumble and Gloria, is unable to dance like the other penguins and feels out of place. He and his best friends, Bodicea "Bo" and Atticus, follow one of Mumble's friends, Ramón, leader of the Amigos, to Adélie-Land, which is now being ruled by a flying penguin called the Mighty Sven. After surviving the loss of his native fishing grounds due to his "miraculous" ability to fly, he hired another of Mumble's friends, Lovelace to be his partner. They tell the others they were saved by humans but fled to Antarctica after believing they'd be eaten. There Sven performs his first miracles by revealing moss to the locals and using his power of "Sven Think" to help Ramón find a mate, where he instantly falls in love with Carmen, another Adélie, who is uninterested. Mumble, having followed the kids' footprints, orders them to come home. After encouragement from Sven, the children leave.
Meanwhile, Will, an adventurous krill is determined to discover what lies beyond the swarm. His best friend, Bill, follows to ensure his safety. Once separated from the swarm they realize that they're at the bottom of the food chain. Will attempts to "move up the food chain" by eating another creature while Bill believes he's going crazy.
Mumble tells Erik he's unique and that he'll someday find his calling, but Erik is still enthralled with Sven. While trying to cross a ice bridge, an elephant seal, Bryan the Beach Master and his two sons, refuse to let the penguins pass. An argument results in Bryan falling off the bridge and getting trapped below. Mumble lures a leopard seal to chase him into the ice, freeing Bryan and earning his respect. Erik, however attributed the successful rescue to his attempt at using "Sven Think", devastating Mumble.
When the penguins return to Emperor-Land, they discover a large iceberg has trapped the emperor penguins in a deep pit surrounded by ice walls. While Mumble, Erik, and Atticus deliver their supply of fish to the stranded penguins, Bo goes back to Adélie-Land for help. When Erik tries to deliver fish by flying like Sven, he nearly tosses himself over the iceberg. Mumble saves him and declares penguins can't fly, hinting that their friends and family are doomed. Erik begins to panic until Gloria sends Mumble away to fish and sings to calm her son down. Meanwhile, Bill decides to create another swarm after spying a family of jellyfish. But Will prefers to adhere to his new predator lifestyle.
The next morning, a flock of skuas attack the trapped emperor penguins. Noah the Elder encourages them to fight the birds. When all seems lost, Bo returns with Adélie-Land, led by Sven. Sven orchestrates a cooperative effort to feed the trapped emperors through hunting and bringing back flows of fish from the sea. Meanwhile, Will, still trying to be a predator, attacks a fish, that is later scooped up and carried by Sven into Emperor-Land.
The humans who saved Sven and Lovelace come to Antarctica again to help the penguins, but a blizzard causes them to flee. Erik urges Sven to teach the penguins how to fly, but Sven reveals he isn't really a penguin, but a tufted puffin. Mumble, after watching snow fall into a crevice between chunks of iceberg, begins to tap-dance and leads the penguins in a dance, forcing the ice to crack. The plan works until several chunks break loose, sending Bo, Atticus, and several penguins into the doomed crevice. Erik and Lovelace tumble towards the edge, and Mumble grabs the threads from Lovelace's vest. The threads snaps and causes Lovelace and Sven to tumble, but Erik is pulled to safety. Having injured his foot, Mumble can't lead the Adélies. Ramón realizes Carmen is trapped below and jumps down to be with her, finally winning her love. Sven proves himself to be a worthy dancer and despite public outcry he leads the remaining Adélies in dance while Erik and Mumble head to the elephant seal beach to seek Bryan, to help in collapsing the ice. Meanwhile, a newly reformed Will is reunited with Bill and their swarm. Bill reveals they are now legends after sharing their journey with the swarm.
Mumble and Erik arrive at Elephant Seal Beach where Bryan is in the middle of a fight. Mumble pleads for help freeing the emperor penguins but Bryan refuses due to his duties as Beach Master. Using his singing abilities, Erik praises Mumble for his bravery and lectures Bryan for refusing to help after Mumble rescued him. Moved to tears, the elephant seals travel en-masse to Emperor-Land and begin slamming the ice to the beat of Queen's "Under Pressure", joined by Will, Bill, their krill swarm, Ramón, the Amigos, Carmen, Lovelace and the newly-reformed Sven. Finally, the iceberg crumbles, creating an uphill passage and the penguins are saved.