A Skylab report of a massive circle in western Wisconsin fires the imagination of two local teens. But their exploration turns tragic as Paul Meadows’ friend disappears in the bluffs of Trempealeau County. Jennifer von Guericke, raised on a dairy farm at the center of this geological mystery, lost her father the same spring. Years later, Jennifer meets Paul, and as they discover their shared loss, the circle begins to stir. Recurring earthquakes threaten not just one Earth, but two.