Nine-year-old Stella Sullivan loves animals, from cuddly kittens to the wild inhabitants of Gateway National Park near her home Montana. Luckily, her aunt's a veterinarian who's happy to have Stella's help in saving a badly wounded duckling, a guide dog that needs CPR...and a spirited mother otter prepared to defend her young at all costs. And if that's not enough, Stella's whole family is worried about wolves meant to live in Gateway National Park...