“Noble was sure the old fellow wasn’t being completely honest with him, and he couldn’t fathom why the Professor would lie. It was just an old door. What was there to hide?”

When orphan Noble Pocket falls into Professor Fairweather’s underground home, he finds a peculiar world of periscopes, animated kaleidoscopic glass, obscure plants, a pet rat, and ancient books of lost languages—and a seeming end to his troubled life above. But when officers from the hidden land of Livund force the Professor to flee into hiding, it’s up to young Noble to travel into the depths of the sea and uncover the mysteries of Livund for himself.