Bella Swan, a seventeen-year-old outcast, leaves Phoenix, Arizona and moves to Forks, a small town located on Washington state's Olympic Peninsula, to live with her father, Charlie, the town's police chief. Her mother, Renée, is remarried to Phil, a minor league baseball player whose career often keeps the couple on the road.
Bella becomes re-acquainted with Jacob Black, a Native American teen who lives with his father, Billy, on the Quileute Indian Reservation near Forks. Bella makes friends at her new high school, but finds the mysterious and aloof Cullen siblings particularly intriguing. Bella is seated next to Edward Cullen in biology class on her first day, but he seems repulsed by her. After a week's absence from school, Edward returns and socializes normally with Bella. A few days later, Bella is nearly struck by a skidding van in the school parking lot. Edward instantaneously covers a distance of over thirty feet, putting himself between Bella and the van, stopping it with only his hand. He subsequently refuses to explain his actions to Bella, and warns her against befriending him. Jacob tells Bella about a long-standing animosity between the Cullens and the Quileutes, and says the Cullens are not allowed on the reservation.
After much research, Bella concludes that Edward has mysterious powers that resemble a vampire's. He eventually confirms this, but says that he and the other Cullens only consume animal blood. The pair fall in love, and Edward introduces Bella to his vampire family. Carlisle Cullen, the family patriarch, is a doctor at the Forks hospital. Esme is Carlisle's wife and the family matriarch. Alice, Jasper, Emmett, and Rosalie are their informally-adopted children. The family's reaction to Bella is mixed, concerned that the family's secret could be exposed.
Edward and Bella's relationship is jeopardized when three nomadic vampires—James, Victoria, and Laurent—arrive in the Forks area. They are responsible for a series of deaths being investigated as animal attacks. James, a tracker vampire with incredible hunting instincts, is excited by Bella's scent and becomes obsessed with hunting her for sport. Edward and the other Cullens protect Bella, but James tracks her to Phoenix, where she is hiding with Jasper and Alice. James lures Bella into a trap at an old ballet studio. He attacks Bella and infects her with vampire venom. Edward arrives and, after a ferocious battle, subdues James just as other Cullens arrive. Alice, Emmett, and Jasper kill James, decapitating and burning him, as Edward removes the venom from Bella's wrist, preventing her becoming a vampire. In the aftermath, Bella has suffered a broken leg and is hospitalized. Upon returning to Forks, Edward accompanies Bella to the high school prom, where he refuses her request to transform her into a vampire. They are unaware that James' mate, Victoria, is secretly watching them, plotting revenge for her lover's death.
Kristen Stewart as Bella Swan
Robert Pattinson as Edward Cullen
Peter Facinelli as Carlisle Cullen,
Elizabeth Reaser as Esme Cullen,
Ashley Greene as Alice Cullen,
Kellan Lutz as Emmett Cullen,
Nikki Reed as Rosalie Hale,
Jackson Rathbone as Jasper Hale,
Billy Burke as Charlie Swan,
Cam Gigandet as James Witherdale,
Rachelle Lefevre as Victoria Sutherland,
Edi Gathegi as Laurent Da Revin,
Sarah Clarke as Renée Dwyer,
Taylor Lautner as Jacob Black,
Christian Serratos as Angela Weber,
Michael Welch as Mike Newton,
Anna Kendrick as Jessica Stanley,
Gregory Tyree Boyce as Tyler Crowley
Justin Chon as Eric Yorkie
Solomon Trimble as Sam Uley.
Krys Hyatt as Embry Call.
Gil Birmingham as Billy Black
Matt Bushell as Phil Dwyer
José Zúñiga as Mr. Molina
Ned Bellamy as Waylon Forge
Ayanna Berkshire as Cora
Katie Powers as Waitress
Trish Egan as Ms. Cope
based on Stephenie Meyer's 2005 novel of the same name
the first film in The Twilight Saga film series