Jack, a little boy with the uncanny ability to turn into any animal he wants, isn't doing so well these days. He's worried about his parents and their money problems, and he's been feeling sick. Then he remembers hearing about a big treasure hidden deep inside the mountain, and he and his friend Gladys embark on an adventure to find the treasure and come to his parents' rescue. But between dragons, nasty little creatures and hunters with evil intentions, that's not going to be easy. To top it all off, Jack has been keeping some secrets that he's going to have to reveal sooner or later, if he doesn't want things to keep getting worse...