After going through Hell itself to escape from the Masks, Captain Corban Rhodes and his team of cybernetically enhanced super-soldiers face the ultimate test when the Aemon Legion calls upon the battalion to use their experience in captivity to hack the Masks and find their one fatal weakness.

With the fate of the galaxy hanging in the balance, Rhodes risks it all to uncover the secret to defeat the Masks once and for all.

Little does he know he's about to uncover a secret so deadly that it will make him question whether he really can go through with this.

What if the Masks are really human after all—exactly the way Rhodes always feared? What if Battalion 1 starts to sympathize with their worst enemies and ends up not being able to fight them at all?