In a world where terrifying monsters walk the earth, one heroic rooster is destined for greatness. When giant demons threaten the innocent, he's going to show them who's boss!

Morio, the kind demon thought to have died in the flood, reappears and attacks a town near where the devils may be hiding. Keiji and his comrades investigate but with the sudden appearance of his half brother, Keisuke, Keiji is forced to confront his troubled history with their father. Despite not wanting anything to do with his old man, Keiji decided to help Keisuke rescue their father from the devils. And in this desperate battle, Chicken Little must face her fears to save everyone!