The Twilight SagaTwilight Saga is a book of series written by Stepehenie Meyer. The theme of the book is, a girl named Isabella Swan who is a human falls in love with a vampire named Edward Cullen. There relationship was not as easy as she thought. She faces many threats. But At last she transforms to a vampire and there is a happily ever after with their daughter Renesmee Cullen and the rest of their family. Later films based on theses book were also released.