In Manhattan, the vampires Goody and Stacy share an apartment and work and study in the night-shift. Goody was turned in vampire in 1840 by the evil Cisserus, who turned Stacy in the 90s, and they became best friends but Goody never told her real age to her friend. They only drink mice blood and refuse to drink human blood, and they go together to the Vampire Anonymous. Stacy falls in love with her classmate Joey, and soon she learns that he is the son of the vampire slayer Dr. Van Helsing. Meanwhile, Goody meets her former passion, Danny, in the hospital where his wife is terminal. When Stacy gets pregnant, Goody knows that the only way that the child can survive is killing Cisserus, since they would revert to their human ages. But nobody knows where her lair is.

David, a college student, is looking for a job. He is hired by Dr. Stoner as a lab assistant for his research and experiments on snakes. David also begins to fall for Stoner's young daughter, Kristina. However, the good doctor has secretly brewed up a serum that can transform any man into a King Cobra snake-and he plans to use it on David.

In Montreal, Joey is the lead singer of the struggling band "The Winners", composed by the sexy bass singer Jennifer, the guitarist Tyler, the drummer Sam and the handyman Hugo. Their incompetent and alcoholic manager Jeff is incapable to help them to reach success and they are on the road on tour playing in clubs and bars in Canada and United States of America. After a show in a bar in Montreal, Jennifer, who is also the Joey's former girlfriend, leaves the place with the creepy Queeny, who is a vampire, and they spend the night together. On the next morning, Jennifer does not meet the band and they travel in their hearse to participate in a rock 'n' roll show without her. In the last moment, Jennifer arrives with a different appearance and on the next day they find that their home page had had several hits, all of them with good reviews and compliments to Jennifer. They become famous and Jennifer great audiences to the shows of "The Winners" and one by one, the musicians are turned ...

The electronic engineer Dr. Cal Meacham is a prominent scientist that is studying industrial application of nuclear energy and also a great pilot. One day, he receives a different condenser and soon his assistant Joe Wilson receives a manual instruction and several components of a sophisticated machine. Carl and Joe build a communication apparatus and a man called Exeter contacts Carl. He tells that Carl has passed the test assembling the Interocitor and invites him to join his research. The intrigued Carl decides to travel to meet Exeter that sends an unmanned airplane to bring him to an isolated facility in Georgia. He is welcomed by Dr. Ruth Adams but she mysteriously does not recall their love affair in the past. They team-up with Dr. Steve Carlson and they note that the other scientists in the facility have been transformed, having a weird behavior. They decide to flee in a car, but they are attacked by rays and Steve dies. Carl and Ruth also witness the facility blowing-up and ...