David Ray killed eight students and then turned the gun on himself. He thought the shooting and suicide would fix his world. It didn't. The massacre threw Tanner Khan and the other survivors into chaos. Twenty years later, Tanner and his fellow classmates reluctantly agree to hold a reunion to lay the past to rest. Although they suffer from Post Traumatic Stress Disorder, they come back to their hometown and reunite in the defunct school building. Old flames are rekindled, fears are ignited, and their lives are about to explode in a whirlwind of memories, haunted by the spirit of David Ray. Once they're inside the school, they discover that a dark entity has joined them. It has come to collect a debt, long overdue, and someone has to pay. Will Tanner and his classmates overcome their fears, putting the pieces of their lives back together, or will they be consumed by their worst nightmare?