Discovering their mother's grave is empty, Karolyn and Michael Cole begin to untangle the mystery of her disappearance. When their father vanishes from the same mountain where she was last seen, the twins are determined to find answers. They find their father's notebook with a cryptic message he left for them and a map leading to a hidden cave. Expecting to locate their lost parents, they instead find their father's notes are about an unfamiliar land, a world of demons, dragons, wizards, and witches. Was he writing a fantasy novel, or could there be another answer to his mysterious disappearance?