While vacationing in the Pacific Northwest, the Henderson clan accidentally run over a strange animal with their car, and when they get out to see what it is, they find the seemingly dead body of a hairy Bigfoot-type monster. Believing that the creature is a grizzly bear, the Hendersons take it home, planning to stuff the beast and put it on display in their living room. Predictably, the hirsute monster revives and is adopted by the family as a pet.