Seventeen-year-old Bella Swan moves to Forks, a small town on Washington state's rugged coast, to live with her father, Charlie, after her mother remarries to a minor league baseball player. She is quickly befriended by many students at her new high school, but she is intrigued by the mysterious and aloof Cullen siblings. Bella sits next to Edward Cullen in Biology class on her first day of school; he appears to be disgusted by her, much to Bella's confusion. A few days later, Bella is nearly struck by a van in the school parking lot. Edward inexplicably moves from some feet away and stops the vehicle with his hand. Edward refuses to explain this act to Bella and warns her against becoming friends with him.
After much research, Bella eventually discovers that Edward is a vampire, though he only consumes animal blood. The pair fall in love and Edward introduces Bella to his vampire family, Carlisle, Esme, Alice, Jasper, Emmett, and Rosalie. Soon after, three nomadic vampires—James, Victoria, and Laurent—arrive. James, a tracker vampire, is intrigued by Edward's protectiveness over a human and wants to hunt Bella for sport. Edward and his family risk their lives to protect her, but James tracks Bella to Phoenix where she is hiding and lures her into a trap by claiming he is holding her mother hostage. James attacks Bella and bites her wrist, but Edward, along with the other Cullen family members, arrives before he can kill her. James is destroyed, and Edward sucks James's venom from Bella's wrist, preventing her from becoming a vampire. A severely injured Bella is taken to a hospital. Upon returning to Forks, Bella and Edward attend their school prom. While there, Bella expresses her desire to become a vampire, which Edward refuses. The film ends with Victoria secretly watching the pair dancing, plotting revenge for her lover James' murder.
Kristen Stewart as Bella Swan, a seventeen-year-old girl who moves to the small town of Forks, Washington from Phoenix, Arizona and falls in love with a vampire, Edward Cullen. Her life is put in danger after a sadistic vampire decides to hunt her... Robert Pattinson as Edward Cullen, a 108-year-old vampire who was changed in 1918 and still appears to be seventeen. He is Bella's love interest and has the ability to read minds, with the exception of Bella's, along with superhuman speed and strength Nikki Reed as Rosalie Hale, a member of the Cullen family who is described as the most beautiful person in the world. She is incredibly hostile toward Bella throughout the entire film. Ashley Greene as Alice Cullen, a vampire who can see the future based on decisions that people make. Billy Burke as Charlie Swan, Bella's father and Forks' Chief of Police Kellan Lutz as Emmett Cullen, the strongest vampire of the family. Jackson Rathbone as Jasper Hale, a member of the Cullen family who can manipulate emotions. He is the newest member of the Cullen family, and thus has the most difficulty maintaining their lifestyle of not feeding on humans. Peter Facinelli as Carlisle Cullen, a compassionate 300-plus year old vampire who looks to be in his mid-20s. He serves as the town's physician and is the father figure of the Cullen family Elizabeth Reaser as Esme Cullen, Carlisle's vampire wife and a mother figure to the Cullen family