Meet five cousins as they join forces to solve a decades-old mystery. Each summer, Wyatt, Jace, Ruby, Lane, and Tye return to Pine Hollow to visit their grandparents. This year, an old map found deep in the town's library leads them on a thrilling search through the woods, uncovering long-buried secrets and a mystery that someone doesn't want them to solve.

As they follow the clues left behind decades ago, the cousins must rely on each other's strengths to unlock the truth. But the deeper they dig, the more they realize they're not the only ones searching.

What secrets lie beneath Pine Hollow? And will they uncover them before it's too late?