The Ghost Adventures crew visit the shuttered Los Padrinos Juvenile Detention Center, a facility given the ominous designation "Devil's Den", to investigate the presence of a lingering dark and disturbing energy that still resides inside the building.

A boy and his father steal an old suitcase from an antique market and discover a weathered tent inside that opens a portal to a cursed circus world from the past; they encounter an entity that will stop at nothing to capture their souls.