After three years of exile from humanity's war against the Kurians, David Valentine returns to battle. The Lifeweavers, Earth's allies in the conflict, have mostly vanished, but those that remain are held captive by an overlord known as the Seattle Kurian. To free them, Valentine must convince the legendary resistance fighter known as Adler to join his cause. But the "Old Man" is something of an overlord himself....

In a valiant rebellion against a half century of occupation by the Kurians, the newly formed Texas Republic and Ozark Free Territory have dealt the vampiric aliens their first major defeat. Resistance member David Valentine is revered as a hero for his part in fighting to regain Earth''s freedom. But a dangerous enemy within his own ranks soon has Valentine facing charges for his handling of the Quisling prisoners - humans who have become pawns of the Kurians in order to survive.

It’s the 18th year of the Kurian Order. The alien vampiric Kur and their avatars, the Reapers, control most of the Earth - their new feeding ground. Humanity is scattered and survives only at their new master’s whims. But the Resistance is attempting to reclaim Earth. David Valentine, member of the elite Cat spy force, is in enemy uniform aboard the aging gunboat Thunderbolt. Whispers have reached him of the discovery of a long-lost weapon in the Caribbean - the first glimmer of hope for humanity to finally defeat the Reapers

David Valentine resigns as a Wolf militia, and accepts an offer to become a Cat, one of the stealthy warriors trained to spy on, and go toe-to-toe with the Reapers. Under the command of his mentor, Smoke, Val's first mission is to enter the Kurian zone and investigate "The Twisted Cross", a strike force of alien-human hybrids, possessing the skills of combat veterans and the hunger of the Reapers.... Along the way, he befriends a powerful alien, a Grog named Anh-Ka, who declares David his blood brother after Valentine nurses him back from death. 

Major David Valentine and his fugitive battalion are the remnants of an expeditionary force shattered in its long retreat from disaster in the Appalachians. Between a raging blizzard, bands of headhunters, and the need to recover wounded soldiers lost during the retreat, Valentine is in for the toughest winter of his life. And Valentine is losing allies fast. Some of the clans in the region have declared themselves in favor of the Kurians, throwing Kentucky into civil war. But the Kurian overlords have determined that the region isn't worth the effort of another conquest.