Dan Kelley still wonders why his parents took him on a perilous journey across the uninhabited wilderness, when he was only four years old. He also wonders how, just a few miles from their apparent destination, they suddenly disappeared. With no family, Dan is forced to grow up in a dungeon-like orphanage in an isolated frontier outpost.
Years later, circumstances surrounding this mystery resurface. Dan and his friends research clues only to end up with vague references regarding an incident that took place more than twenty years before.
The group decides to undertake their own dangerous expedition to the remote site to search for answers. When their scientific assault of the mystery results only in dead ends, Dan must dig deeper to understand his father’s motivations.