The Lake Code Lyoko : Season 4 Episode 11

When a comet passes near Earth, XANA uses a laser-equipped military satellite to split it into chunks, simultaneously aiming the bulk of it directly at the factory. Aelita, Odd, and Ulrich are exploring the digital sea at the time, and XANA traps them with a firewall to prevent them from stopping the attack. Meanwhile, Yumi is stuck at school and, when informed of the attack, works to evacuate the school. Jeremie tells Yumi to connect his laptop to an antenna to tap into the military satellite and destroy the comet. She does so with help from Hiroki and Johnny. However, XANA prevents him from doing so. Unable to stop the attack, Aelita reasons that XANA is more concerned with taking her prisoner than destroying the supercomputer, and to test it has Odd devirtualize her. Having guessed correctly, she watches as XANA destroys the comet and calls off his attack on his own accord.