The Extinction

Happy Cloud, the omnipotent supreme overlord of everything ever, faces a dilemma. Practical Planet is overpopulated and dying, and he can't find a new home for the Practical Forecasters, its invincible, immortal inhabitants. He casts his mind out across the Practiverse and finds a cheerful little planet that is perfect for his needs.
There's one problem: that planet, Earth, is already populated by billions of funny little creatures called humans.
Humanity soon finds itself besieged by all t...