Kyle is a new kid in town who likes to draw. Vic is a cool cheerleader who’s secretly a math whiz. Quiet Beth is a history buff, while goofball Harry likes performing magic tricks, with the help of his patient wingman, Nate. Five kids unlikely to form a team, for sure.

But then they’re thrown together at summer camp, where they watch a grainy old movie about the history of their town, Windrose, and one of its illustrious citizens of a bygone era: the intrepid explorer-inventor Henry Merriweather. He’s the one who established their camp. Merriweather’s Camp Pathfinders’ motto? Plus Ultra: more beyond!

The five kids soon find there is indeed “more beyond” in their pokey town with its weird weather and sudden geysers of smelly air. Deciphering a route of historical markers leads them to Merriweather’s old castle, which is lined with ornate, beautiful tiles in hallways that lead to secret rooms full of odd objects—and where time itself is warped!

Kyle, Vic, Beth, Harry, and Nate witness scenes from Merriweather’s past and realize his experiments and eccentricities are pointing toward a path—that could lead to the rumored lost treasure of Windrose.

This is the path our heroes are meant to follow, on a journey that will take them back and forth through time, through woods, and across waterways revealed by moonlight, right up to the looming Moon Tower itself—which holds Merriweather’s secret . . . and the treasure!