The man has a monotonous job punching tickets for the Japanese railway. One night, while walking home, he saves Jun from getting raped by two hoodlums. A few days later, he sneaks into her house but gets discovered. Later, as he watches his son subdue an insect with a chemical, the man gets an idea to subdue women while they're sleeping so he won't be discovered sneaking into their home. His new hobby spirals out of control as his confidence grows.
Set at the height of the Japanese student rebellion in 1968, the film tells the story of the friendship between two very different men—a fortyish film maniac who spends nearly all his time at the movies and a 19-year-old going through the final rites of passage from adolescence to adulthood.