The Adventures of Jimmy Neutron Boy Genius: Jet Fusion

Jimmy has an assignment to write a book report, and Jimmy decides to invent the Virtual World Reproduction Machine (VWRM), a device that will show the class what the book is about like a movie. Jimmy places his Jet Fusion book into the machine and it malfunctions, thus turning Retroville into a virtual world. Then Professor Calamitous kidnaps Jet Fusion and it's up to Jimmy to save him. (wiki)