Set one year after the events of Hell House LLC II, the hotel is on the verge of being torn down when it is purchased by billionaire Russell Wynn as the new home for his popular interactive show, Insomnia. He invites journalist Venessa Sheppard and her crew to record everything happening inside the hotel leading up to the performance – but they soon encounter a more nefarious plot, one that threatens to unleash a veritable hell on earth.

After a hard day of volleyball at the beach, a teen whose parents are away decides to have a slumber party with her girlfriends. Their boyfriends predictably show up to scare them, but a stranger from the beach is also seen lurking around the house. Soon the group begins experiencing an attrition problem.

A small European town, where sisters Ayia and Mirra live, gets struck down by an unknown disease which takes many lives. Following their mother’s death, the younger sister falls ill. Having realized that conventional medicine is useless in the face of the sister’s disease, Ayia seeks help from Father Herman, a parish priest and a close family friend. In his house she finds books that are very far from the conventional religion. She gets to know that only penetration into Mirra’s sick subconscious mind and discovery of the true cause of her disease will give her a chance to save her sister. Ayia is ready to go through this terrifying ritual, dive into the depths of the subconscious mind, and face the demons residing there.

A college student unexpectedly finds that she has inherited a derelict house. Accompanied by a group of friends…