Code Lyoko - Vol. 1: X.A.N.A. Unleashed (2003)

The French-produced cartoon television series CODE LYOKO apes the look of Japanese anime with a slick, computer-animated tale of MATRIX-like virtual reality. Teenagers Jeremy, Yumi, Ulrich, and Odd are normal high school students when they discover the existence of a parallel universe called Lyoko hidden within their computers. Ruled by the benevolent humanoid Aelita, Lyoko is under attack by the evil computer program X.A.N.A., who plans to achieve both virtual- and real-world domination by unleashing a massive computer virus. It isn't long before the teenage foursome find themselves thrust into the struggle to save Lyoko through a series of high-tech, action-packed battles. The series kicks off with this first volume of four episodes.