A happily domesticated grizzly bear named Boog, has his perfect world turned upside down after he meets Elliot, a scrawny, fast-talking one-horned wild mule deer. They both end up stranded together in the woods during hunting season and it's up to the duo to rally all the other forest animals and turn the tables on the hunters.
Marshal "Big Jim" Cole turns in his badge and heads to Wyoming with his family in order to settle on some land left him by a relative. He faces opposition from a neighbor who wants that land for his own sons, and from a grizzly bear, nicknamed "Satan", who keeps killing Cole's livestock.
A fifteen-foot grizzly bear figures out that humans make for a tasty treat. As a park ranger tries rallying his men to bring about the bear's capture or destruction, his efforts are thwarted by the introduction of dozens of drunken hunters into the area.