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.

导演札克巴甘斯和他的灵异探险团队，买下一栋被称为「地狱之门」的印第安那州鬼屋，本来一行人说服过去的房客们，重返这间鬼屋分享过去发生于此的骇人故事。然而，就在分享故事时，一名女房客突然被附身并开始用方言说话，纪录片的拍摄不得不就此打住。没想到，就在事隔一年后，这部纪录片却悄悄完成了……。