Historian Andrew Donnell invites the Hardys to Tennessee to join in a reenactment of the battle of Shiloh -- Frank in Confederate gray, Joe in Union blue. But soon both boys are seeing red. Rifles are raised, shots ring out, and Donnell falls to the ground -- cut down by real bullets!

The Hardys check out the nearby Civil War theme park, where their fun soon turns to terror. The tunnel of love, the hall of mirrors, and the Rebel Yell roller coaster have been rigged to thrill the boys to death. The war games are over, the true battle begun -- Frank and Joe are directly in the line of fire!