In New Eden, Martin unsuccessfully tries to protect his wife and daughter from an attack of vampires led by a blonde vampire. He returns to North America to seek out the vampire hunter Mister to help him to destroy the vampire leader. Along his journey, he stumbles upon dangerous survivors and the notorious brotherhood; but he also finds a new community with good people that welcome him. But Martin is seeking out revenge.

Blacky, a black sheep, is the terror of the farm. And she is obsessed with going to the Moon. Kanuto, the sheepdog, gets tangled up in her plans while failing to hide his love for her. They get swept away in an adventure where they meet an opera-singing cow, a fashion designer wolf, illegal sewing spiders, a weird couple of birds from some famous singing TV reality show contest, and a peculiar pack of dogs, the 'Pastrinos', who have a rocket ready to launch. And of course, Pinky, the Godzilla-sized sheep, with a bad attitude of lunar proportions.

There is no turning back. Whether we trust our friends, others or ourselves our decision determines the fate of the future. Green River's story deals with the agonizing truth of the actions we take in times of crisis.