Ringu

Two high schoolers, Masami and Tomoko, talk about a videotape that was allegedly recorded in Izu and bears a curse that kills the viewer in one week. Tomoko reveals that a week ago she, her boyfriend Iwata, and two other friends watched a strange tape and received a phone call afterward. The two hear the phone ring, but amusingly, it turns out to only be Tomoko's mother. As soon as Masami goes back upstairs however, Tomoko witnesses her TV turn on by itself, and soon thereafter, an unseen force kills her.