The movie begins with Leo, our protagonist, bragging about him being king through a song sung by somebody else. After this 4-5 minute scene, the story immediately cuts to Tooey and his mother doing...Something. Tooey's mother is then caught by poachers and is hurled off with all of the other badly-animated animals.
Tooey visits his mother and tries to free her, but is almost caught by the poachers. Tooey escapes, and then sings a bland song called "Out On My Own" (Take a wild guess what this song is about). Tooey is then captured, but is rescued by Leo. Tooey follows Leo, and Leo originally rejects him, but takes him in after Tooey whines and complains about it for the next few minutes.
Leo and Tooey spend the next part of the movie...errr..."Bonding" I guess, and they both become close. However, Tooey wants his mom to be rescued, and after complaining about it for a while, Leo calls all of the animals, but they refuse to help him because he was acting like a total *Beep* to them. Tooey then begins to degrade Leo (Yeah, because an 8 year old boy should TOTALLY be lecturing an adult about manners). Because his spirit has been broken, he apologizes to the animals by cleaning up their crap and singing a lame song (Titled Literally "I'm A Really Nice Guy").
Somehow this makes them forgive him and what follows is a VERY dramatic fight scene that includes jumping, growling, and moving their bodies in an unnatural matter. Eventually, of course, the animals win, and Leo marries Tooey's middle-aged mother, and the film ends with Tooey growing up within a matter of 5 seconds and getting shown one last time on Pride Ro-Errr, no, some unnamed rock