Twelve-year-old Mark Williams has always loved exploring the forest. But while camping with his parents in Washington State, he wanders off and becomes lost. A pack of wolves descends on him, and Mark is sure he won't survive.

Then something amazing happens. A Bigfoot, also known as Sasquatch, rescues him from the wolves and then carries Mark to the safety of his home and Lady Bigfoot. Mark loves the gentle creatures, and he grows quite accustomed to the wilderness lifestyle. Soon, he even begins to think of the two creatures as his surrogate parents.

Mark lets the dream of returning to civilization slip further and further away. He loves living in the woods and loves his new family. But then, eight years later, something unexpected happens. A plane crashes in the forest, and the only survivor is the governor's beautiful daughter, Rita. Mark rescues her, and the two soon fall in love.

When a search party finds Mark and Rita, Mark has a difficult choice to make. He doesn't want to leave his Bigfoot mother and father behind, but Rita's father doesn't want his little girl living in the forest, either! Will Mark and Rita be able to stay in the woods, or will they be forced to return to civilization?