Scooby-Doo 2: Monsters Unleashed is a 2004 film, and sequel to 2002's Scooby-Doo based on the Hanna-Barbera series classic, Scooby-Doo. It was directed by Raja Gosnell, who also directed the first film, and was written by James Gunn, who also wrote Scooby Doo. It was released on March 26, 2004.

Plot

Mystery, Inc. - Fred, Daphne, Velma, Shaggy and Scooby-Doo - are attending the grand opening of the Coolsonian Criminology Museum in Coolsville, the evening's premiere exhibition is the costumes of the many monsters Mystery Inc. has faced over the years. Velma has a crush on the museum's curator Patrick Wisely (Seth Green), while news reporter Heather Jasper-Howe (Alicia Silverstone) seems to berate Fred and Daphne's relationship. However, the night turns into a crime scene when an Evil Masked Figure (Scott McNeil) attacks the museum with the Pterodactyl Ghost costume that has come to life. They escape with the Black Knight Ghost and the 10,000 Volt Ghost costumes.