One of Tony and Brad's best with the boys on the hunt for a treasure of missing LSD that has been stolen by a criminal organization. Their quest eventually leads the boys to far-off desert oil ruins where much of the film's best action occurs.

Professor Bruno Volpi spots some strange paintings on a cliff. He sends for Professor Zovek to help him discover its meaning. Zovek uses his powers to figure the writings are a warning that a cosmic tragedy is going to happen. Their fears prove to be true when a fire ball falls from the skies causing the ressurrection of the dead as zombies, craving for human flesh.

Near the end of the 19th century, Prof. John Mayer and his assistant, the scientist Dr. Isabel Reed, accidentally invent a powerful ray. An alien travels to Earth to destroy the machine since it would be a threat to the universe. He initially possesses the mind of Thomas, a sex maniac and serial killer, to get close to Mayer during the demonstration of the machine to scientists and the military. Mayer's niece, Laura, meets an acquaintance of her uncle, the chemist Dr. Paul Rosten, and Mayer invites him to join the research. When Thomas gets close to Mayer, the alien also possesses his mind in order to destroy the device and his notes. Meanwhile, Thomas is not able to control his murderous impulses and attacks several women with a straight razor.

A fast-food delivery man for a New York Chinese restaurant gets involved with international terrorists and is recruited by undercover agents to help track down the leader in this prospective pilot.

Tony and Brad investigate the murders of politicians and scientists. They soon face off against a team of super hit women with their usual flair.

A race-car driver must elude the police and two rival criminal organizations as he tries to locate a suitcase full of heroin and absolve himself of murder.