'Twilight' is a romantic fantasy film series based on the novel of the same name by Stephenie Meyer. The story follows teenage high school student Bella Swan who moves to Forks, Washington and falls in love with a vampire named Edward Cullen. The series is comprised of five films: 'Twilight,' 'New Moon,' 'Eclipse,' 'Breaking Dawn Part 1,' and 'Breaking Dawn Part 2.'

In 'Twilight,' Bella moves to Forks to live with her father and meets Edward Cullen, who is a vampire. Despite his initial efforts to stay away from her, they fall in love and Edward reveals his true nature. However, they must face the danger posed by a group of rogue vampires who seek to harm Bella.

'New Moon' sees Edward leaving Bella in order to protect her from his world. Bella becomes depressed and turns to her friend Jacob Black, who is a werewolf. However, when Edward believes Bella has died, he seeks to take his own life, forcing Bella to race to Italy to stop him.

'Eclipse' sees the Cullen family and the werewolves of La Push form an uneasy alliance to fight against a group of vampires who are seeking revenge on the Cullens. Meanwhile, Bella must choose between her love for Edward and her friendship with Jacob.

'Breaking Dawn Part 1' sees Bella and Edward get married and conceive a child, which threatens Bella's life due to its vampiric nature. The Cullens must work together to protect Bella and her unborn child from the dangers that arise.

'Breaking Dawn Part 2' sees Bella adjust to her new life as a vampire and the family must face off against the Volturi, who falsely believe that Bella and Edward's child poses a threat to their kind.

Overall, the 'Twilight' series is a captivating tale of love, danger, and the supernatural that has captured the hearts of audiences around the world.