Code Lyoko - Season 1 Episode 2

After a lecture on nuclear power in class, Odd begins casting for a traditional rock band called the Pop Rock Progressives. They need a drummer, and several try out for the position, including Nicolas. Nicolas turns out to be the best, but Odd is reluctant to let him on. Meanwhile, Xana decides to overload the nuclear power plant by storing electricity in a transformer and unleashing it on the plant all at once. Unsure if they can stop such an event, the group votes and, by a 3 to 2 vote (Aelita being the swing vote), decides to tell the authorities. Yumi goes to inform them while the others stay behind to deal with Xana. Now they must deactivate the tower before the city is turned into a nuclear wasteland. Not only that, they also have to do so before the authorities find out about the supercomputer.