Corn grain contaminated with steroids produces large rats the size of small dogs who begin feeding on the residents of Toronto. Paul, a college basketball coach, teams up with Kelly, a local health inspector, to uncover the source of the mysterious rat attacks and they eventually try to prevent the opening of a new subway line as well as find the mutant rats nest quickly, or there will be a huge massacre of the entire city!

A band of satanist hippies roll into a town and begin terrorizing the local folk. After raping a local girl, her grandpa goes after them, only to be beaten and forced to take LSD. His grandson then plots revenge on the satanists by feeding them meat pies infected with blood from a rabid dog. They turn into crazed lunatics and begin killing and/or infecting everything in their path.

After an elderly hospital patient dies, a nurse tries unsuccessfully to contact the next of kin. Later, a social worker continues the effort but finds only the neighbor who was feeding the patient’s dogs. A county investigator fails to locate any relatives and ultimately must process the belongings in the decedent’s home. Meanwhile, we follow a frail man’s discharge from the hospital and an older woman’s day spent running errands and trying to stay cool during a heat wave.