Bunker (Battleship Earth Series) (Volume 1)

Hidden in bunkers, caves, basements, and storm cellars around the world, survivors of the Master’s scourge wait, biding their time as they assess the vulnerabilities of their enemy and plot revenge.

Now, the wait is over. It is time for the survivors to regain their humanity, and take back the planet.

The Battleship Earth Series is a post-apocalyptic story that follows a band of survivors as they struggle to reclaim their birthright, leading to an epic battle and the revelation of a secret known only to a handful of humans.

From the Text:

During the first days of darkness when the exultation over contact with intelligent beings from parts unknown turned into the horrific realization of their plans, gunfire was common. Every military unit on the planet, as well as local police forces and armed civilians, met the invading force with force. It was true, they could be killed, and their bodies proved just as fragile to lead projectiles as their human subjects.

But their machines were invincible. And like black widow spiders lurking in dark corners, the Masters hid behind their tangled web of ships, rovers, drones, and body armor, only revealing themselves to dine on human flesh when safety was assured.