Scooby-Doo 2: Monsters Unleashed is a 2004 American family comedy adventure film, based on the animated television series, Scooby-Doo, Where Are You?. It is the second installment in the Scooby-Doo live-action film series and a sequel to 2002's Scooby-Doo, and was directed by Raja Gosnell, written by James Gunn and released by Warner Bros. Pictures.
The film stars Freddie Prinze Jr., Sarah Michelle Gellar, Linda Cardellini, Matthew Lillard, Seth Green, Tim Blake Nelson, Peter Boyle and Alicia Silverstone, with Neil Fanning reprising his role as the voice of Scooby-Doo.
The film was released on March 26, 2004 to negative reviews but grossed $181 million worldwide.
Mystery Inc. (Fred, Daphne, Velma, Shaggy and Scooby-Doo) attend the opening of an exhibition at the Coolsonian Criminology Museum commemorating their past solved cases with monster costumes on display. However, the celebrations are interrupted by a masked man known as the Evil Masked Figure who steals two costumes using the reanimated Pterodactyl Ghost. The gang are ridiculed by journalist Heather Jasper Howe, who starts a smear campaign against them. Concluding an old enemy is the mastermind, the gang revisit old cases, dismissing the former Pterodactyl Ghost, Jonathan Jacobo, due to his death during a failed prison escape, they guess that Jeremiah Wickles, the Black Knight Ghost’s portrayer and Jacobo's cell mate in prison, is the culprit.
Going to Wickles mansion, Fred insists on ringing the door bell twice, which activates a trap door that drops the gang into a cage. Velma identifies that the lock can be unlocked with Wickles's fingerprint. Daphne ingeniously releases them all using the makeup from her bag to recreate the previous thumb print left by Wickles, thereby effectively unlocking the prison. The gang find a book that serves as an instruction manual on how to create monsters. Shaggy and Scooby-Doo find a note inviting Wickles’s to visit the Faux Ghost nightclub. They are attacked by the Black Knight Ghost, but escape when Daphne fights him off while Velma discovers its weak spot and disables it. Before fleeing, the rest of the gang had previously discovered through the book found in Wickle's mansion that the key ingredient to creating the monsters was a substance called "randomonium", which can be found at the old silver mining town.
After Daphne helps Velma overcome her fears of intimacy and assert herself by changing up her image, Daphne, Velma and Fred go to the museum, accompanied by the curator Patrick Wisely, but discover that the rest of the costumes have been stolen. Heather Jasper Howe ridicules the gang further by turning the city against them. The gang go to the mines, finding Wickles's plans to turn it into an amusement park. As they confront Wickles, he states that he and Jacobo were cell mates who hated each other and that he has no connection to the museum robberies.
Shaggy and Scooby, after overhearing the rest of the gang criticizing their tendency to bumble every operation, and especially their most recent offense failing to tie the rope and secure the Pterodactyl Ghost, resolve to better themselves and become real detectives. Following a lead from their first clue ever, which was stuck to Scooby's foot after he played around in Wickles mansion, sneak into the Faux Ghost to try and solve the mystery. After speaking to Wickles, they learn he has resolved his ways. Scooby eventually causes a scene and his disguise falls off, leading Scooby and Shaggy to escape through a trash chute. On their way out, they spot Patrick uncharacteristically assaulting who appears to be a member of his staff, ordering him to find answers to who vandalized his museum. Escaping an awkward interaction with Patrick, Shaggy and Scooby spot Wickles leaving the bar and follow him.
The gang then find the Monster Hive where the costumes are brought to life as real monsters. Shaggy and Scooby play around with the machine’s control panel, bringing several costumes to life, and the gang flee with the panel as the Evil Masked Figure terrorizes the city. Escaping to their old high school clubhouse, the gang realize they can reverse the control panel’s power by altering its wiring. Captain Cutler’s Ghost emerges from the bayou, forcing the gang to head back to the mines, encountering the various monsters along the way. Velma sees Patrick in the mines, finding a shrine dedicated to Jacobo built by Patrick, but Patrick proves his innocence by helping Velma after a catwalk unexpectedly gives way under her.
The gang confront the Evil Masked Figure as Tar Monster captures all of them but Scooby, who uses a fire extinguisher to freeze the Tar Monster’s body. He reactivates the control panel, transforming the costumes back to normal. The gang take the Evil Masked Figure to the authorities, unmasking him as Heather. When asked why did she do all this, Velma suddenly pulls and peels Heather's face off, revealing she is actually Jacobo in disguise, having escaped death and sought to get revenge on Mystery, Inc. by discrediting them. Jacobo’s cameraman Ned is also arrested as an accomplice. Mystery, Inc. are praised as heroes once again in Coolsville. In the Faux Ghost, the gang celebrates their victory with the now reformed criminals whom they unmasked in the past (including Wickles).
After the credits, Scooby-Doo is seen playing a Scooby-Doo 2 Game Boy Advance game. After he succeeds, he tells the viewers to enter the Scooby-Doo 2 Game Boy Advance code. (This is only seen on the VHS and DVD release)
- Freddie Prinze Jr. as Fred Jones
- Sarah Michelle Gellar as Daphne Blake
- Matthew Lillard as Shaggy Rogers
- Linda Cardellini as Velma Dinkley
- Seth Green as Patrick Wisley
- Peter Boyle as Jeremiah Wickles
- Tim Blake Nelson as Dr. Jonathan Jacobo
- Alicia Silverstone as Heather Jasper-Howe
- Scott McNeil as the Evil Masked Figure
- Kevin Durand as the Black Knight Ghost
- Karin Konoval as Aggie Wilkins
- Joe Macleod as Skater Dude #1
- Brandon Jay McLaren as Skater Dude #2
- Calum Worthy as Kid on bike
- Nazanin Afshin-Jam as Shaggy Chick
- Cascy Beddow as Young Shaggy
- Emily Tennant as Young Daphne
- Lauren Kennedy as Young Velma
- Ryan Vrba as Young Fred
- Stephen E. Miller as C.L. Magnus
- Christopher R. Sumpton as the Zombie
- Neil Fanning as the voice of Scooby-Doo
- Dee Bradley Baker as the voice of Pterodactyl / Zombie / Red-Eyed Skeleton
- Michael J. Sorich as the voice of Tar Monster / Cotton Candy Glob
- Bob Papenbrook as the voice of Black Knight
- Terrence Stone as the voice of 10,000 Volt Ghost
- Wally Wingert as the voice of Green-Eyed Skeleton
- C. Ernst Harth as the voice of Miner 49er
- J.P. Manoux as the voice of Scooby Braniac
Home media release