The pupils at a high school next to a nuclear power plant start acting and looking strange after buying contaminated drugs from a plant worker.

In 1939 a spaceship carrying four alien escaped prisoners crash-lands on Earth and the aliens take over the bodies of four locals. Fifty years later the aliens find out that an artist has written a comic book called "Space Avenger," which they believe is about them. They go to New York to try to kill the artist.

A psychologist for inmates has knowledge of a secret, experimental brain implant, designed to change convicts' behavior so that they will not remember or repeat their crimes and, therefore, be able to return productively to society rather than remain in an increasing prison population. The procedure, however, suffers some imperfections...

A sociology instructor finds her new teaching duties at a private college interrupted by the presence of a killer.