In a jungle isolated in the African plains, live a group of animals including Munki the bold, adventurous monkey, Trunk, the big-hearted elephant, Rocky, the dog-like rhino, Tallbert, the earnest and awkward giraffe, Humph, the grumpy hedgehog who is very protective over his property, Ribbert, the lazy frog, a female ostrich and her three unhatched chicks that always try to escape, and Ray the firefly. 

One morning, Munki and Trunk wake up to discover that they can speak, which they take advantage of. They learn that the source of them talking is an jello-like, four-legged alien named Fneep, who has come from the planet Scaldron to conquer Earth and has brought some amazing technology with him, including a translation device called a speech pod that lets the animals talk for the first time that Munki tries on the others. 

The animals make him give in easily and allow themselves to surrender peacefully, making Fneep’s conquest a success. They learn from Fneep that his ship crashed near the mountains, and since he’s conquered Earth, he can use the homing beacon in his ship that summons the Scaldronians instantly.

Munki, Trunk, Rocky, and Humph agree to come with him on the way to Fneep’s ship.