In their newest adventure, the Pathfinders are in for a wild time--literally! Unwittingly transported fifty years into the past, Kyle, Vic, Harry, Beth, and Nate desperately try to find a way back to their own time while attempting to avoid questions about who--and from when--they are. A mysterious map and a reckless river journey takes them straight into danger and beyond, where the present and the past collide in otherworldly ways. Will the Pathfinders find their way home, or will they be trapped in this not-so-groovy era forever?