This is an amazing book! It is about a boy, named Ephraim, who's ancestors searched for the mystical Fountain of Youth. It contains three families: Appledore- Smith, the Darlings who are the caretakers of the water castle, and the "rival", the Wylies. They all live in a town called Crystal Springs. Crystal Springs is an odd place. Everyone there lives over a 100 years old and the area is full of radiation. Ephriam Appledore-Smith moved to the water castle in Crystal Springs due to his father who has a severe medical issue. The house is full of strange extensions and a humming sound. He later learns of the curing water of the Fountain of Youth. Will it cure his father? He sets out for help from Will Wylie and Mallory Green/Darlings. Together the trio get trapped between the endless school work of reality and the mystical Fountain of Youth.