Pit violinist Claudin hopelessly loves rising operatic soprano Christine Dubois (as do baritone Anatole and police inspector Raoul) and secretly aids her career. But Claudin loses both his touch and his job, murders a rascally music publisher in a fit of madness, and has his face etched with acid. Soon, mysterious crimes plague the Paris Opera House, blamed on a legendary "phantom" whom none can find in the mazes and catacombs. But both of Christine's lovers have plans to ferret him out.
During a bitter family feud, Jodie Hatfield, (Amy Manson) and her boyfriend Ricky McCoy, (Bradley Taylor) decide to leave town to avoid being found out, but are soon caught in the act. Wanting vengeance, he seeks out the monster Pumpkinhead, and resurrects it seek revenge on the family. Despite being warned away by the ghost of Ed Harley, (Lance Henriksen) his vengeance plan starts out, and the Hatfield family is soon under siege by the powerful demon. Not accepting the legend of the creature and believing their arch-rivals are the real cause, the two families attempt to go to war, only to be stopped when Pumpkinhead attacks the Hatfield house. Putting aside their differences, they band together to stave off the creature before it's vengeance pact is completed.
In 1921 a field expedition in Egypt discovers the mummy of ancient Egyptian prince Im-Ho-Tep, who was condemned and buried alive for sacrilege. Also found in the tomb is the Scroll of Thoth, which can bring the dead back to life. One night a young member of the expedition reads the Scroll out loud, and then goes insane, realizing that he has brought Im-Ho-Tep back to life. Ten years later, disguised as a modern Egyptian, the mummy attempts to reunite with his lost love, an ancient princess who has been reincarnated into a beautiful young woman.
On the eve of her seventeenth birthday, Mari Collingwood tells her parents that she is going to the concert of underground band Bloodlust in New York with her friend Phyllis Stone. She borrows the family's car and heads with her friend to a dangerous neighborhood in the city. Meanwhile, the sadistic and cruel escapees Krug Stillo and Fred 'Weasel' Podowski are hidden in a hideout with their partners Sadie (Jeramie Rain) and Krug's addicted son Junior Stillo (Marc Sheffler) after killing two guards and one shepherd in their runaway. The two girls seek marijuana near the theater and meet Junior that offers some Colombian grass to them. They go to his apartment and are subdued by the criminals that rape Phyllis. On the next morning, they hide the girls in the trunk of their convertible and head to Canada. However, they have a problem with the car's rod and they stop on the road close to Mari's house. When Phyllis tries to escape, the gang stabs her to death and shots Mari after humiliating and raping them. They seek shelter in Mari's home, but during the night, her mother overhears a conversation of the criminals telling that they have killed her daughter. She tells her husband and they plot a scheme to revenge the death of their princess.
A team consisting of a physicist, his wife, a young female psychic and the only survivor of the previous visit are sent to the notorious Hell House to prove/disprove survival after death. Previous visitors have either been killed or gone mad, and it is up to the team to survive a full week in isolation, and solve the mystery of the Hell House.