Nature, once scorned, now answers with the coyote zombie's howl – a song of retribution.

Chris Phoenix torments by the ghosts of a year past, their horrors fading into a manageable ache. Then, a simple newspaper article reporting a coyote sighting in Rumba Park rips open old wounds, shattering his fragile peace and unleashing old terrors.

Miles away, Ryan Highsmith plans a new chapter for IRG and his cherished cattle, unaware of the bizarre and deadly evolution stalking their every move.

Relentless coyote zombies hunt them while growing legions of human and avian undead besiege them, trapping them in an inescapable nightmare.

Their only hope rests with Finn and his crew. But can humanity truly outrun the deadly consequences of its own making, with nature itself now hunting for vengeance?