Hot Stuff (S)

In the prehistoric era, man is freezing when the gods take pity and give him warmth (fire). But there's a condition: don't be careless. He passes it down through the ages and gains more control over it but it is still dangerous. We see a modern domestic scene: the cigarette falls, the iron is left on, the fork goes into the toaster, and a plug gets overloaded. Soon an entire city is in flames.