Bear brothers Briar and Bramble set off on an adventure with their human friend Vick to Wild Land, an amusement park where humans can turn into animals using a gene-technology bracelet.

Boonie bears and bareheaded Qiang blast into primitive times and experience a period of exciting and breathtaking time in a primitive tribe.

Briar and Bramble, two bear brothers who constantly annoy Vick, are about to have a rude awakening. Vick goes to meet them to make them disappear and remove them from his life. During the commotion, all three are caught in by a shrink ray and miniaturized. The tiny team must return to the device to reverse the effects, but their efforts are thwarted by Vick's father. All three of them embark on a crazy race through a beautiful world, right under our feet, not only to return to their right , but also to find their families.