The Japanese detective series "Sotsugyo Time Limit" tells the story of high school friends who get involved in a criminal affair. Just three days before their official graduation, four students receive mysterious letters. Ordinary student Esiki Kurokawa, football player Junpei Ogita, beauty Mio Komatsu, and top student Ayane Takahata must find their kidnapped English teacher. Not only is their upcoming graduation ceremony at stake, but also the life of Risako Mizuguti.