9-year-old Jacob craves adventure. His grandfather (Pop) and older cousin Jack, both treasure hunters and, at times, ghost chasers, have survived many narrow escapes while collecting a fortune in valuable relics, gold coins and rare jewels. What could he do? Augie, Pop's Scottish Terrier, wearing his red bow tie, has the answer, and, in exchange for his favorite treat, will guide Jacob to the ancient oak tree and its hidden passage, leading to a strange and classical world of mystical creatures, evil witches, talking animals, dangerous outlaws, brave knights, and, if he can survive to collect it, a priceless golden key. Can Jacob meet the challenge? And Augie, what is HIS secret?