The evil computer virus known as X.A.N.A. has been creating alternate worlds, known as Replikas, in an attempt to take over the real world. Each Replika is linked to a supercomputer hidden somewhere on the globe, and each supercomputer is guarded by an end-level boss that exists in the real world. Based on the French animated series, Code Lyoko: Quest for Infinity offers combat, puzzles, and RPG-style weapon and character upgrades set within two overlapping universes. Players can assume the role of the five main characters from the show: Yumi, Odd, Ulrich, Jeremy, and Aelita, and guide them around the digital sea aboard the Lyoko warriors new vehicle, the Skid. The storyline was co-developed by series creator Moonscoop, and the game coincides with events from season four of the computer-animated show.