Duty of honor demands that Tanner Mirabel, bodyguard and weapons specialist, take revenge on his employer's murderer. The search leads to the planet Yellowstone, where the “melting plague” - a mutation of tiny viral mechanisms that once faithfully served people - has turned the City of the Abyss, the pearl of human culture, into something extremely strange, dark and extremely dangerous. Trying to survive and fulfill his mission in a completely hostile environment, Mirabel is again and again subjected to the onslaught of other people's memories - and begins to suspect that he is not who he thinks he is.