Scooby-Doo 2: Monsters Unleashed (2004)

The story of how Mystery Inc. was formed.

When Scooby and the gang get trapped in a video game created for them, they must fight against the 'Phantom Virus'. To escape the game they must go level by level and defeat the game once and for all.

Jon Arbuckle buys a second pet, a dog named Odie. However, Odie is then abducted and it is up to Jon's cat, Garfield, to find and rescue the canine.

The Cortez siblings set out for a mysterious island, where they encounter a genetic scientist and a set of rival spy kids.

The Looney Tunes search for a man's missing father and the mythical Blue Monkey diamond.

A struggling songwriter named Dave Seville finds success when he comes across a trio of singing chipmunks: mischievous leader Alvin, brainy Simon, and chubby, impressionable Theodore.

Scooby-Doo, Shaggy, Freddy, Daphne and Velma fish for clues to solve the mysteries of The Woodsman, The Fishman and The Banshee of Black Canyon.

When a son of a gangster shark boss is accidently killed while on the hunt, his would-be prey and his vegetarian brother both decide to use the incident to their own advantage.

The Little family adopt a charming young mouse named Stuart, but the family cat wants rid of him.

The children of secret-agent parents must save them from danger.

Jon Arbuckle travels to the United Kingdom, and he brings his cat, Garfield, along for the trip. A case of mistaken cat identity finds Garfield ruling over a castle, but his reign is soon jeopardized by the nefarious Lord Dargis , who has designs on the estate.

When Scooby tries to make it big in Hollywood with little success, the rest of the gang try to convince him to return to his normal Saturday morning cartoon.