Yogi Bear [Dan Aykroyd] and Boo Boo [Justin Timberlake] who are picnic baskets stealers in
Jellystone Park. Alias Park rangers, Smith [Tom Cavanaugh] and Jones [T. J. Miller] try to catch Yogi Bear and Boo Boo.
Mayor Brown is losing money. And to solve the problem he decides to designate the park as a logging site. In order to save trhe park, Yogi Bear and Boo Boo team up with Ranger Smith and a film maker named Rachel [Anna Faris].
Ranger Smith holds a festival where he hopes to make a profit selling Season Passes. To sabotage his efforts, Mayor Brown promises Ranger Jones the position of head ranger if the funds are not raised. Yogi Bear had promised to stay clear of the festival, but Jones has a plan. Yogi Bear tries to entertain the crowd by water-skiing, but it goes wrong when he sets his cape on fire. The fireworks Smith has set up, go off too early and everybody panics.
Jellystone Park is shut down and Ranger Smith, Rachel, Yogi Bear, and Boo Boo learn that Boo Boo's pet turtle is a rare species, so the Park cannot be destroyed. Mayor Brown finds out and tries to kidnap the turtle.
Clever Rachel has installed a video camera in Boo Boo's bow tie and it records Mayor Brown's confession that he doesn't care about the protected turtle. When the confession is replayed, the police arrest Mayor Brown and - after some more inane "can't think of a better ending" activities - all ends happily. Quite a stupid plot really, but will keep the kids laughing all through it and they will probably want to see it over again! If you can stand it.