Once kidnapped from the Himalayas by a gentle yeti, Lady Agatha Farlingham grows up in a hidden valley raising and educating a family of polite, endearing Yeti children. As tourists and hunters encroach on their secret home, Agatha—now elderly—seeks help to transport her Yeti family to safety in England. With the aid of two brave children, Con and Ellen, and a kindhearted lorry driver, they embark on a hilarious and heartwarming road trip full of adventures—from freeing zoo animals to dodging bullfights and rescuing a child in an Alpine snowstorm. Their journey’s suspenseful yet whimsical path leads them toward a dramatic conclusion at Agatha’s ancestral home.