Abby Baxley and her cousin Jack love to visit their grandpa at the family farm. They spent their summer vacations exploring the land, the old house, and especially the barn. This trip, though is a sad one. Their grandpa has passed, and for insurance purposes, the barn needs to be taken down. But, when they discover a mysterious symbol carved in the rubble of the barn, they soon realize that the old farm, and family has a secret to hide...