In "Pet Sematary," the misspelling of "cemetery" as "sematary" reflects the perspective of the children who created the graveyard for their deceased pets. This intentional error adds an eerie, childlike quality to the story and emphasizes the themes of innocence and the tragic consequences of tampering with death. The altered spelling also contributes to the unsettling atmosphere of the film, highlighting the supernatural elements related to the burial ground's dark powers.

"Pet Sematary," based on Stephen King's 1983 novel, tells the story of Louis Creed, who discovers a burial ground for pets that has the power to resurrect the dead. After his cat is killed, Louis buries it in the "Pet Sematary," only to face horrifying consequences when it returns changed. The story explores themes of grief, loss, and the dangers of tampering with life and death. The narrative is inspired by King's own experiences with loss and the struggles of dealing with mortality, making it a poignant and chilling tale.

In the ending of "Pet Sematary," Louis Creed's son, Gage, is tragically killed in an accident. Overwhelmed with grief, Louis decides to exhume Gage's body and bury him in the cursed cemetery, hoping to bring him back to life. Gage returns, but he is not the same and becomes violent, ultimately killing Louis' wife, Rachel. In a desperate attempt to end the horror, Louis confronts Gage and kills him. The film concludes with Louis burying Rachel in the Pet Sematary, suggesting he may intend to resurrect her as well, leaving the future ambiguous and foreboding.

"Pet Sematary" (2019) is a remake of the original 1989 film, which is based on Stephen King's 1983 novel of the same name. While it follows a similar premise involving a burial ground that brings the dead back to life, the 2019 version includes some changes and updated elements, including a different ending. It is not a sequel but rather a reimagining of the original story.