At the center of the story is Lou teenage girl, estranged from her mother and grandmother after the death of her father. Lou is trying to save money and go on a trip to China, which they have long dreamed of with his father, so he spends all his free time in search of another part-time job. One day the heroine discovers a large and strange monster on the roof of the house, and after a while she finds out that it is a Yeti, who was away from his home. A brave girl decides to help her new friend return to Everest, where his family remained, but they can prevent the villain-a millionaire with a group of scientists who dream of locking Bigfoot in a top-secret laboratory...