With his mom's illness getting worse again, Max needs to figure out a way to save his family--now more than ever. So Max and his cousin Alex revisit Jules Verne's manuscript The Lost Treasures, and they find a clue that just might be the key to a cure. It's the story of Verne's seemingly impossible recovery from a near-fatal gunshot wound. The book hints that he was only able to do so after collecting magical healing elements that he'd saved from a race around the world. Piecing together hints from Verne's Around the World in 80 Days and his lost manuscript, Max and Alex realize there's a way to save Max's mom if they're daring enough to try.