Ah, yes. The boy genius himself. Young Jimmy Neutron hates to be called short and loves being called the smartest. He may be smart and a genius, but somehow Cindy Vortex always seem to outsmart him. Now, Jimmy may fight and argue with Cindy, but yes we all know about his "secret" crush on her. And vise-versa. Most of his inventions never work around her, or, anyone else. But with the help of his mechanical built-it-himself dog, Goddard, he can manage all the inventions pretty well. And he may be a genius, but he gets grounded, goes to bed earlier than he wants to and has to be a kid at school. But his parents, Judy and Hugh, are proud of their genius (even though Hugh can't think straight).
Jimmy Neutron has finally proved he's a real genius to Cindy, as well as won her attention, and now when Cindy talks to him, she's not as mean as before. But they still have to argue; they can't let people find out their "secrets". Not even their best friends can find out! Not like they need to be told.
Jimmy has gotten the approval of his classmates when Nick Dean, the "cool" kid, chickened out in front of Poultra. Now all he has to do is get his inventions to work right when people are watching...