Steve, a young slacker, emerges from an underground vault after a year spent reading a lengthy novel, and discovers he has missed a nuclear war (thereby surviving it unharmed) in the interim.
Exploring the "post-popocalyptic" world, where animals have mutated into menacing giant creatures, fire now rains from the skies instead of water, dogs explode from human contact, and people melt when exposed to sunlight, Steve discovers latent telepathic abilities, and uses them to communicate with the one dog he meets who can tolerate human company.
Steve takes shelter at the home of Colleen, who hides her deceased parents from the "dead collectors"; roving children who claim melted corpses.
This frustrates Phil Green, an evil politician who sees his chances of becoming mayor of Toronto greatly enhanced by the death of his opponents, and has assigned two assistants to stalk Colleen, whom he strongly desires.
A bizarre power struggle develops as Steve bumbles his way into folk heroism, helping to reclaim civilization for the common people as Phil tries to harness surviving resources to take ultimate control.