Earth is recovering after Denver and his group managed to stamp out the immediate alien threat. Now, Denver and his team, stationed in a liberated croatoan farm, plan to restore humanity as the dominant force. But when shocking information comes to light, they set off on an immediate mission north.

The team encounter a hybrid city, where humans and croatoans live and work together. It’s here in this strange new civilisation that Denver discovers there’s a bigger threat to the planet than the aliens already on the surface: something far more terrible is coming. It’ll be a race against the clock to defeat this new threat and Denver will need all the help he can get.