The Jimmy Timmy Power Hour (2004) Struggling with his
science project, Timmy Turner wishes that he could be sent to the best laboratory in any universe. When his fairy godparents, Cosmo and Wanda, fulfill this wish, Timmy is sent to the town of Retroville in the universe of child prodigy
Jimmy Neutron. Jimmy is sent to Dimmsdale in Timmy's universe when he accidentally activates a magical transporter created by Cosmo and Wanda. As they attempt to return to their respective worlds, Jimmy and Timmy meet the various side characters of each universe and Timmy becomes romantically involved with Jimmy's classmate, Cindy Vortex. While messing around in Jimmy's lab, Timmy accidentally turns Goddard, Jimmy's robotic dog, into a giant, violent monster from a video game he was playing called the Decimator. Timmy manages to stop Goddard from destroying Retroville, but is contacted by Jimmy, who tells him that Mr. Crocker, Timmy's fairy-obsessed teacher, has stolen the transporter, allowing him to take over Fairy World. Crocker is defeated by Jimmy. Both Jimmy and Timmy manage to return to their own universes. Back in Dimmsdale, Timmy realizes that he never finished his project, but at the last second, Jimmy teleports Goddard to the science fair, allowing Timmy to win.
The Jimmy Timmy Power Hour 2: When Nerds Collide! (2006) Jimmy and Timmy enter each other's worlds for a second time, both wanting to ask Cindy out to their school dance celebrating
Friday the 13th. In an attempt to gain Cindy's affections, the two engage in a battle of smarts that sends Jimmy and his friends to Dimmsdale. As Timmy seeks to prove that Jimmy is a fraudulent scientist, Cosmo and Wanda struggle to keep their existence a secret from the people of Retroville. Meanwhile, Professor Calamitous, a major villain in Jimmy's universe, unleashes a surge of anti-fairies from Fairy World that threatens the rotation of Timmy's Earth. Jorgen Von Strangle, the powerful fairy commander and enforcer of
Da Rules, gets increasingly frustrated by both Jimmy and Timmy's friends and their manipulation of fairy magic. In addition, Jorgen is forced to work with Calamitous after he is betrayed by the leader of the anti-fairies, Anti-Cosmo.
The Jimmy Timmy Power Hour 3: The Jerkinators! (2006) In their third and final encounter, Jimmy and Timmy make amends while trying to defeat the enemies from their own universes—including a monster that they concoct together—while purposefully rejecting their respective friends in the process, including Cindy. Initially, they are unable to make the monster evil enough to fight them properly, but when they succeed, he almost immediately turns against them and absorbs Cosmo and Wanda's magic and Jimmy's intelligence, and then begins destroying both children's universes. ==Voice cast==