It involved a bunch of baby forest animals, ex. baby skunk, baby hedgehog, baby turtle?, baby mole with glasses. And there all taught by a professor who is a hedgehog or something like that. Anyways, a man throws a bottle out of a truck, and a 18-wheeler tire busts because of the bottle, and the 18-wheeler was carrying gas, and the whole forest is poisoned and the baby animals escape with the professor. Who at some point they all build this flying machine made out of leaves that the professor invented and the skunks parents die. Yep.