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When Unit Four--a biological soft robot built and stored high above the Jovian atmosphere--is activated for the first time, it's in crisis mode. Aliens are attacking the Helium-3 mine it was created to oversee, and now its sole purpose is to defend Earth's largest energy resource from the invaders in ship-to-ship combat.

But something's wrong. Unit Four doesn't feel quite right.

There are files in its databanks it can't account for, unusual chemical combinations roaring through its pipes, and the primers it possesses on the aliens are suspiciously sparse. The robot is under orders to seek and destroy. That's all it knows.

According to its handler, that's all it needs to know.

Determined to fulfill its directives, Unit Four launches its ship and goes on the attack, but it has no idea it's about to get caught in a downward spiral of misinformation, reprograming, and interstellar conflict.

Most robots are simple tools. Unit Four is well on its way to becoming something more....

Brothers Harry and Jack leave Manchester for New York City for their annual weekend getaway. But upon arrival, they find a silent, deserted JFK, where the few ground crew they can spot have all been slaughtered.

Harry and Jack are military veterans, but they've never encountered anything like this.

As they witness the carnage and stumble across murderous madmen in a post-apocalyptic New York City, it becomes clear that escape is the only option--that is, if there is anywhere sane to escape to...

The 47North edition is a revised edition: This edition of First Activation includes editorial revisions.

It began in First Activation, when military veterans Harry and Jack arrived at a silent JFK airport and a New York City full of madmen driven to kill one another.

In Second Activation, the two brothers escape from Monroe, Michigan, and head for New York to face down Genesis Alliance, a despotic organization that is implementing the chaos to create a new order. Caught in a race against time, confronted with a local team intent on revenge and expecting the imminent arrival of a larger reinforcement, Harry and Jack must avoid existing dangers, gain allies, and stop the Alliance from launching its next Activation.

With the fate of the remaining population at stake, Harry and Jack know that stopping the Activation means going to war once again...

Second Activation is the sequel in the high-octane and thrilling post-apocalyptic Activation series.