Returning from a hunting trip in the forest, the Henderson family's car hits an animal in the road. At first they fear it was a man, but when they examine the "body" they find it's a "bigfoot". They think it's dead so they decide to take it home (there could be some money in this). As you guessed, it isn't dead. Far from being the ferocious monster they fear "Harry" to be, he's a friendly giant.

A widowed father struggles to hold together his family of three teenagers, one of whom is intellectually challenged and enrolled in a state school for "special" children where he finds fulfillment in his love of sports, emulating his older, athletic brother.