Jimmy Neutron is a boy genius. He is 30 years ahead of everyone in Lindbergh Elementary. But when it comes to being cool... he's got a lot of catching up to do. He speaks in constant vocabulary and often prefers to make inventions than do chores. He has his own laboratory in his dad's old tool shed. After receiving a mysterious signal from space, he responds by sending a satellite made from a toaster into orbit. Later that night, Jimmy and his friends sneak out on a school night to attend the grand opening of a new amusement park. At that same moment, all the kids' parents get abducted by aliens who interpreted Jimmy's message the wrong way. Seeing their guardians missing the next morning, the kids of Retroville have an all-out celebration of freedom until they realise how much they miss them and need them. Jimmy finds out that the town's adults were abducted and all the kids build spaceships to journey to the planet Yolkus to stop a sacrificial ritual.