When Gran and his family move to Carousel, he has no idea that the town is built atop a secret. Little does he suspect, as he walks his sister to school or casually eats a banana, that mysterious forces lurk mere inches beneath his feet, tearing up the earth like mini-hurricanes and causing the town to slowly but surely sink. When Gran's friend, the difficult-to-impress Catalina Catalan, presses a silver handle into a hillside and opens a doorway to underground, he knows that she is extraordinary and brave, and that he will have no choice but to follow wherever she leads. With luck on their side, and some discarded hockey sticks for good measure, Gran and Catalina might just find a way to lift their town--and the known world--out of danger.