When the relatives of a recently deceased voodoo priestess gather at her sinister house on Skull Mountain for the reading of the will, they discover a killer in their midst who wants to keep them from collecting their inheritance.
After an aging voodoo priestess dies, her arrogant son Willis Daniel's believes he is next in line to lead. He is outraged when Lisa, his mother's adopted apprentice is chosen as the leader. Willis seeks revenge by reviving the African prince Blacula — but soon finds that he cannot control him.
A frustrated pianist himself, music journalist Myles Clarkson is thrilled to interview virtuoso Duncan Ely. Duncan, however, is terminally ill and not much interested in Myles until noticing that Myles' hands are ideally suited for piano. Suddenly, he can't get enough of his new friend, and Myles' wife, Paula, becomes suspicious of Duncan's intentions. Her suspicions grow when Duncan dies and Myles mysteriously becomes a virtuoso overnight.
A college professor falls in with the counterculture crowd in San Francisco after resigning from his position in solidarity with two expelled hippie students.