When an acorn falls on a happy-go-lucky chicken's head he begins to panic and spreads the word that the sky is falling down, much to the amusement of the town's locals who are quick to prove him wrong. The little bird decides to keep his ideas to himself in future, only to hear warning of an alien invasion which could turn his prediction into reality. Disney animated adventure, with the voices of Zach Braff, Garry Marshall and Joan Cusack.

When the sky really is falling and sanity has flown the coop, who will rise to save the day? Together with his hysterical band of misfit friends, Chicken Little must hatch a plan to save the planet from alien invasion and prove that the world's biggest hero is a little chicken.