The "Twilight Saga" is a series of four novels written by Stephenie Meyer that follows the romantic relationship between a human girl named Bella Swan and a vampire named Edward Cullen. Set in the fictional town of Forks, Washington, the story explores themes of love, danger, and the supernatural, as Bella navigates her feelings for Edward and the challenges posed by his vampire world. The series includes the books "Twilight," "New Moon," "Eclipse," and "Breaking Dawn." It gained immense popularity, leading to a successful film adaptation of each book, starring Kristen Stewart as Bella and Robert Pattinson as Edward. The saga has a dedicated fan base and has significantly influenced the young adult fantasy genre.