Thomas Jacobs invents a way to watch people's memories from the inside. Going against his morals, he accepts an offer to enter a heroin addict's memories to literally see if he committed a crime. However,a malfunction causes his consciousness to become trapped inside the criminal's mind. He remains a prisoner in the addict's memories for more than four years until he discovers the possibility of escape.
A bunch of zombies that are used by the government to fight in a major war in the near future get launched into space. The space shuttle gets caught in a time warp and returns to Earth in the present day. Naturally, the zombies get loose and terrorize a motley assortment of folks who are trapped inside a high school.