Two street-wise Chicago cops have to shake off some rust after returning from a Key West vacation to pursue a drug dealer that nearly killed them in the past.
After a lightning bolt zaps a robot named Number 5, the lovable machine starts to think he's human and escapes the lab. Hot on his trail is his designer, Newton, who hopes to get to Number 5 before the military does. In the meantime, a spunky animal lover mistakes the robot for an alien and takes him in, teaching her new guest about life on Earth.
Robot Johnny 5 moves to the city to help his friend Ben Jahrvi with his toy manufacturing enterprise, only to be manipulated by criminals who want to use him for their own nefarious purposes.
Doc McCoy is put in prison because his partners chickened out and flew off without him after exchanging a prisoner with a lot of money. Doc knows Jack Benyon, a rich "business"-man, is up to something big, so he tells his wife (Carol McCoy) to tell him that he's for sale if Benyon can get him out of prison. Benyon pulls some strings and Doc McCoy is released again. Unfortunately he has to cooperate with the same person that got him to prison.
While on a family vacation, rafting expert Gail takes on a pair of armed killers while navigating a spectacularly violent river.