Red, Chuck, Bomb and the rest of their feathered friends are surprised when a green pig suggests that they put aside their differences and unite to fight a common threat. Aggressive birds from an island covered in ice are planning to use an elaborate weapon to destroy the fowl and swine.
A teenager finds herself transported to a deep forest setting where a battle between the forces of good and the forces of evil is taking place. She bands together with a rag-tag group characters in order to save their world—and ours.