A tale of delinquent and lazy school girls. In their efforts to cut remedial summer math class, they end up poisoning and replacing the school's brass band.

The members of a sci-fi club accidentally spill Coke on the remote controller of an air-conditioner during summer and suddenly a time machine appears in their sweating bath-like clubroom.

Suzume Katagura, a bored housewife, spends her days doing chores and taking care of her husband's pet turtle. One day, she sees a wanted ad for spies. Hoping for some excitement in her life, she decides to give them a call.

Tsuneo is a university student working part-time in a mah-jong parlour. Lately the customers have been talking about an old lady who pushes a baby carriage through the streets. They say she is carrying something for a crime syndicate, and they wonder what it is she has in the carriage Money? Drugs? One day, the owner of the mah-jong parlour sends Tsuneo out to walk his dog. A baby carriage comes rolling down a hill and crashes into a guard rail. The old lady asks him to look into the carriage, where he finds a young woman clutching a knife. This is how Tsuneo first meets the girl who calls herself Josee.