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 Josée.