Even though their parents disappeared during a hunt three months ago, seventeen-year-old Indi and his siblings, Beleza, Oscar, and Zulu, continue to roam the Mediterranean on their sailboat and hunt down monsters--but Indi yearns for a more settled life for his family, and he hopes that his parents' journal with its tantalizing hints of a treasure, will provide them all with the means of escape from their nomadic and dangerous life before it is too...

Arthur sets out to save his family's home from real estate developers when his grandfather mysteriously disappears. When he finds his grandfather's ancient clues of treasure, he unlocks a passageway that leads to a spectacular world with little people.