Angel Light at Deadend

Zoe lives in Dead End. This is what people call the world after it has been bombed and damaged by sickness. Zoe runs from a dark shadow that chases her and then falls underground. There she meets Aireramigishia (Airi), a being from space who has been caught in the only mainframe computer left on earth. He needs help to get out, but all the computers were gone by the time Zoe grew up.
Zoe and Airi travel in time to seek help but can find only one small group who are able to see them. They need someone who knows about computers and the young man, Red, fits their need. The group travels back into Dead End to complete the task of getting Airi out of the computer. Airi has promised to try and prevent the world disaster if he is released.