Saki, Anju, Chiaki, Ami, and Kaya reunite for the first time in years. The five of them excitedly decide to go Toshimaen Amusement Park, a place that was very important to them when they were younger. None of them know that they're about to enter a nightmare…
Under the influence of his delinquent friend, a former model student eschews schoolwork and joins a gang of school kids who do nothing but fight.
Masao Yano was once a high ranking member of the biggest yakuza group in Japan. He left the yakuza and now runs a private detective office with a young girl Shiori Kuroki. She is in the second grade of elementary school. One day, he gets a phone call for his assistance. He goes out to meet his client, but he finds his client dead.
