A domesticated grizzly bear named Boog rescues Elliot, a chatty wild mule deer from a hunter ,to find themselves stranded together in the woods 3 days before Open Season. They team up with other forest animals to protect themselves from hunters.
After an incident affects his self-esteem, Elliot abandons his wedding preparation to join the rescue party of Mr. Weenie, who was kidnapped by a canine gang determined to turn him into a domesticated pet.
After he switches places with a fuzzy bear named Doug at a traveling circus, Boog's friends set out on a rescue mission to bring him home.
After Boog hears a scary story about a werewolf that roams the forest, he decides not to join his friends on their annual camping trip. However, his woodland buddies try to help him face his fear.