prequel

/ˈprikwəl/
noun
  1. A story, movie, or play that takes place before an earlier work in a series, showing events that led up to it.
    • Fans were excited to see a prequel set twenty years before the original film.
    • The author wrote a prequel to her bestselling trilogy.
    • The new movie is a prequel that explains how the villain became evil.
Antonyms