At Cavalry Ridge Campground, three young friends encounter the ghost of a Union soldier who tells them about the Battle of Gettysburg.

When Zach and Philip, along with their friend Chucky, go to Gettysburg, Pennsylvania, to help their aunt with her new house, they find the ghost of a Confederate soldier who also needs their help.

Three young boys rely on the help of their ghost-friend, Corporal Jared Scott, to solve the mystery of a new ghost that appears at Cavalry Ridge Campground.