The Ring is a series of novels written by Koji Suzuki, released in the 1990s. Initially, there were three books: Ring, Spiral, and Loop. A short story collection called Birthday was released shortly after, introducing extra stories interconnecting the trilogy. Two further books S and Tide were published in 2012 and 2013.
The books revolve around a fictional cursed videotape that kills whoever watches it seven days later, created by the ghost of Sadako Yamamura, a psychic character thrown down a water well to her death. Each book explores the misfortunes of its protagonists as they become involved with the mythos around Sadako and the videotape.
The success of the novels led to the release of numerous film adaptations in Japan, South Korea, and the United States of America.
This story is set in present-day Tokyo. When four teenagers mysteriously die one night at the same time, Kazuyuki Asakawa, a journalist and uncle to one of the teens, takes a particular interest in the case and investigates. This leads him to a holiday resort called Hakone Pacific Island, where the four teens stayed one week before their death. There he watches a videotape left behind in their room which contains a series of abstract and realistic images. At the end of the sequence of cryptic and disturbing images, a warning appears: "The one who saw these images is destined to die in one week at this time. If you do not wish to die, do as will be said from now on. That is—" but the rest is erased by an advertisement. This has a strange mental effect on Kazuyuki, who immediately believes that the tape has now placed its mark on him.
He enlists the help of his best friend, Ryuji Takayama, a philosophy graduate and an admitted rapist. When Ryuji hears Kazuyuki's story, he watches the tape, and asks Kazuyuki to make him a copy for him to study at home. Their investigations lead them to the volcanic island of Oshima. After Kazuyuki's wife and child also watch the tape, Kazuyuki realises he must find the truth and perform the "charm" to prevent the deaths of both his family and his friend.
Then their investigations lead them to search for a person named Sadako Yamamura. Sadako was the daughter of Shizuko Yamamura, who was known for her exceptional ESP abilities but later branded as a charlatan. In depression, Shizuko jumped into Mount Mihara's crater. Later they learn that Sadako, who lived 30 years ago, was still missing. The evidence leads them back to Hakone where they find a well. At the bottom lie Sadako's remains; Kazuyuki sets her free by giving her a proper burial. Thinking he has performed the charm, Ryuji and Kazuyuki go home convinced. At Ryuji's deadline, he is watching the videotape; the space around the TV becomes distorted. He dials Mai Takano, his assistant. The television shows the scene of rolling dice. Ryuji tries to telephone Kazuyuki and yells "Get me out of here!" before screaming as he is killed by the curse.