The Grotto Under the Tree
by John A. Theo Jr.
Sebastian and Sara mistakenly descend into a mystical land where elves, mermaids, gnomes and other mythological creatures live. The two stumble into an ancient battle between the fair folk and evil creatures called the Kylo. Their guide on this journey is Capri, an elf lord searching for his lost tribe. The Kylo chase the children and Capri north into the Arctic Circle, to an unlikely ally.