Insanity_
Finding a working super computer inside an abandoned technology factory may seem quite lucky, yet for high school student Haruka and her friends, it could just be the complete opposite.
When uncovering the secrets behind this super computer presents a number of life or death situations for the group, they need to figure out what to worry about more.
The safety of themselves, or the safety of the world.
[A prequel to Goodbye World, begins between seasons 2 and 3 of Code Lyoko.]