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.

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