One day 4 students found a super computer in an abandoned factory. There they met Aelita who was the guardian of Lyoko. So when ever the super virus X.A.N.A. plans an attacks, Yumi, Ulrich, and Odd go to Lyoko and protect Aelita for her to go to the towers XANA activated. They have to keep up with their school too...
Last Episode04x30 Echoes Aired: Nov. 10, 2007
With their mission completed, the group looks back on all their fond memories of Lyoko. Sissi, meanwhile, plants a tracking device on Ulrich …
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