Gregory's father is missing, and so is the Hope Diamond Before Gregory knows it, he and his family are whisked away to stay with his 'crazy' Aunt Ness, where he learns of an ancient legacy and discovers a mysterious gemstone which may hold the key to finding his lost father. Undead pirates, creatures of myth and legend and an adventure that spans the globe ... all wait for Gregory, if he can only harness the power of the Destiny Stone.