The House on Tombstone Hill is a horror film about a group of semi-hip yuppies, friends who constantly bicker, who decide to fix up an old house for them to live and party in.
As they work on the house, they uncover the dark secrets of the old woman who used to live there... and then they meet her! The elderly lady appears frail and senile at first, but soon reveals herself to be strong and quick as she starts killing off the friends one by one.
The house itself is haunted, preventing them from leaving. To make matters worse, the friends who are murdered rise from the dead within minutes as wise-cracking zombies, intent on helping the old lady kill every living person in her house.