Humans became immortal 2087, but immortality brought sterility too and over the course of three hundred thousand and twenty two years, all of them, except for five individuals, have died to unnatural causes. Cloning does not work, as the complexity of the human mind can not be copied, so humanity is down to its last few individual.

Nothing happens over several thousand years, while the five live far away from each other, reclusive, with only occasional contact. One day, Maya gets an invite to one of the others, one she would call a friend, not only because they had a thing once.

As she gets to his place, she finds him dead and several clues that it must have been murder. She sets out to find the killer among the few humans left. But one after the other, they are killed too.