Han San bedroom with three sisters in high school, often slightly bullying sister, unbearable trio in retaliation for Pico, a section of the cursed video sent to her death, to death slightly. However, the three sisters could not escape the curse of Sadako ridden, bizarre roommate Lena died. Desperate two sisters, decided to ask for help to deal with Bunshinsaba Sadako, only to provoke another powerful evil spirits, the two Japanese ghost imminent war...

An injury ended Zhang Zhiqiangs dream of becoming a professional basketball player, so he became a physical education teacher. To impress the new young math teacher, he volunteers to teach the problem class of the school in math.