Quick Plot Summary: Released in 2000, Scooby-Doo and the Alien Invaders is a Animation, Family, Comedy, Mystery, Science Fiction film directed by Jim Stenstrum, written by Davis Doi. The narrative combines stunning visual artistry with storytelling that appeals to all ages. It provides a scannable look at the movie's central conflict involving Scott Innes as Scooby Doo / Shaggy (voice).