Inside every human on this planet is a genetic time bomb that’s already started ticking. A gene planted inside of us seven million years ago by a being known as the Caretaker has mutated causing many of today’s common disorders, first in the brain and then in other less complex organs. Next it will spread to the reproductive system, leading to the eventual annihilation of mankind. The only one who can save us is the Caretaker’s son. From a race of near-immortal asexuals, the Caretaker’s son must adopt human form to fulfil his mission and save our race. Having studied humans from afar all of his life, the Caretaker’s son is excited at the prospect of his brief visit to Earth, but once in human form he is subjected to the full gamut of human emotions—something he is ill-equipped to cope with.