When thirteen-year-old Max Tilt happens upon his great-great-great-grandfather Jules Verneâ€™s unfinished, unpublished manuscript, The Lost Treasures, he doesnâ€™t realize that heâ€™s found the answers to all his problems. And Max has a lot of problemsâ€”his mother is sick, his father is out of work, and his home is about to be foreclosed on.
But when Max and his cousin Alex discover that Verneâ€™s last work reveals everything he wrote was fact, not fiction, they realize that the book holds the key to something incredibly valuable. A treasure that can save his houseâ€”and maybe his entire family. But Max and Alex arenâ€™t the only ones who know about Verneâ€™s clues. Spencer Niemend, a strange skunk-haired man who has spent his life researching Verneâ€™s works, is bent on reshaping the world with the hidden treasure. To find it first, Max and Alex must go on an adventure thatâ€™ll take them from the broken remains of an underwater city to the very jaws of a giant squid to the edges of a whirlpool from which no one has ever emerged alive.