An amusement park mogul offers a random group of diverse people $1 million to spend the night in a decrepit former mental institution.

Frederick Loren has invited five strangers to a party of a lifetime. He is offering each of them $10,000 if they can stay the night in a house. But the house is no ordinary house. This house has a reputation for murder. Frederick offers them each a gun for protection. They all arrived in a hearse and will either leave in it $10,000 richer or leave in it dead!

Eight years have passed since Sara Wolfe and Eddie Baker escaped the House on Haunted Hill. Now the kidnapped Ariel, Sara's sister, goes inside the house with a group of treasure hunters to find the statue of Baphomet, worth millions and believed to be the cause of the House's evil.

Is there any possible downside to accepting an invitation from Vincent Price to spend an evening in a creepy mansion that was built on something called “Haunted Hill?” If so, Mike, Kevin and Bill couldn’t find it! In fact they were so eager to join Mr. Price and his terrifying moustache that they riffed the film live, on-stage, and now you can reap the rewards from the safety of home with this live show DVD! Yes, horror classic House on Haunted Hill provides a mesmerizing walk down “people actually used to find this SCARY?!?” lane. Join the RiffTrax guys as they bring their special brand of rapid-fire comedic commentary to every skeleton-hanging-from-visible-wires, clumsy sexual overtone, and a stunningly inept test pilot whose “heroics” typically lead him to bloody his own nose after locking himself in a broom closet!

With the help of her friends, Emily moves to a remote home to take better care of her brother, Zack who is diagnosed with cerebral palsy. But what they don't know is that the house is keeping a terrifying secret that will haunt them one by one.