Saki, an ordinary high school girl, spends boring days studying hard. Her problem is that her relationship with her parents is not going well. Her parents were on bad terms, and they were taking it out on her. One day, Saki is frightened when she is spotted by a gang of high school delinquents, and when she accepts just one cigarette from them, for some reason they build a comfortable relationship her. Because of her troubles with her parents, each moment with the delinquents sparkled to her. That was the beginning of the tragedy. What will happen to her Saki's life!?