Jellystone Park is on high alert: Tourists are flocking to Jellystone's Picnic Rock and aliens are close behind them! In a fabulous feature-length adventure, Yogi and Boo Boo are beamed up to a spaceship and alien invaders send clones of our two heroes, called Duploids, back to Earth in their place. And although hard to believe possible, the Duploids cause even more trouble than the real deals. Hopefully Yogi and Boo Boo can make it off the ship and back in time to save Jellystone and the unsuspecting picnickers from Duploid destruction. For fantastic family fun, let Yogi and the Invasion of the Space Bears take over your house.