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 are gone in Zoe's time frame.
Zoe and Airi travel back in time to seek help. They find a small group of young adults who can see Zoe plea for help while meditating. Red is the oldest and knows about computers. This fits Airi's need. They convince the group to travel up in time to Dead End to begin the task of getting Airi out of the computer. Airi has promised to try and prevent the world disaster if he is released.