The year is $CURRENTYEAR+8.
An evil genius, Dr Proetton, has been hired by the CIA to infect the world's computers with a virus called SystemD, crippling them.
Only you can stop him. You must find the floppy disk with the Devuan Antivirus on it, and install it on the master computer, which is hidden in Vault7.
TL;DR: Shoot anything that moves!
Left/right -> Move left/right
Ctrl -> Jump
Alt -> Shoot
Up -> Action key (open doors, use teleporters, etc.)
Escape -> Open the menu