Michael is sixteen, and he is one of the most successful gamers on the virtualnet - a complete gaming web with hundreds of thousands of locations. Everything is possible here: hunt dragons in the Middle Ages, take part in the American War of Independence, fly on starships, experience the most incredible sensations! But a new level that promises unprecedented adrenaline is not for the weak. And here something strange happens... Cain, an intelligent computer virus, infects the players’ avatars, either killing them or infusing their physical bodies with virtual spies. Locked in someone else’s body, Michael is despondent. Friends are far away, and Cain is literally breathing down your neck, demanding that you accept new rules of the game. And the worst thing is that Michael has only three days to think about it, after which the monstrous computer program will gain immortality...