A man wakes up in an alley, with no memory of who he is or how he got there. He's soon picked up by the police, because they have reason to believe he's one of the people behind PAIRD, Practical Artificial Intelligence Research and Development. PAIRD used to be a government contractor working on autonomous drones; for some reason they very suddenly had their funding cut off. But now, PAIRD drones are appearing around the world, attacking people and places for no apparent reason. So the authorities are hoping that he can help, if he can remember. Otherwise, he's going on trial for the destruction the drones have caused. However, he's quickly busted out of the holding facility by another man who also woke up in a weird place with most of his memory gone. Their only lead is a series of enigmatic notes that set them off on an action-filled adventure around the world to find out who they are and just what the heck is going on.