"The Grudge" is a horror film that revolves around a cursed house in Tokyo, Japan. The story begins when a social worker named Karen discovers that the house is haunted by a vengeful spirit. This spirit, known as Kayako, is the result of a tragic event that occurred in the house, leading to a cycle of violence and death for anyone who enters. As the film progresses, the curse spreads to those who come into contact with the house or its inhabitants. Each character experiences terrifying encounters with the supernatural forces, illustrating how the curse affects their lives. The film explores themes of grief, revenge, and the inescapable nature of the curse.