Okada works part-time at a cleaning company. Recently he has been feeling frustrated about his go-nowhere life. One day co-worker Mr. Ando asks Okada to help him in his quest to win the love of Yuka, a waitress at a nearby restaurant. Reluctantly Okada agrees and, by chance, meets high school classmate Shoichi Morita when at the restaurant. After seeing Okada and Morita talking, Yuka tells Okada that Morita has been stalking her. While Okada finds it hard to believe, he recalls how Morita was severely bullied throughout high school. He wonders if there may now be something amiss with his former friend. While the ordinary life drama between Okada, Yuka and Mr. Ando plays out, the deranged Morita engages in a spree of serial murders as he attempts to trap Yuka in his web of lust driven crime.