Code Lyoko is about a group of five boarding school students enrolled at Kadic Junior High School: Aelita, Jeremy Belpois, Odd Della Robbia, Ulrich Stern, and Yumi Ishiyama. The students travel to the virtual world of Lyoko - which is found in a supercomputer housed in the basement of an abandoned factory near the school - to fight against a megalomaniacal digital entity named Xana.