The Regime is on the hunt, forcing the Resistance to take refuge aboard the Lifemaker, an advanced submarine that houses a special cargo: a handful of women who can still give birth to human children. Locked inside his tin can prison, Jacob can no longer escape his role in the Great Iron War. He's forced to face life as a father, life as a soldier, and life beneath the deep blue sea. More than anything, he's forced to face himself.To evade the Regime's own submersibles, all parties must work together, but tensions are high, and not everyone on board is looking out for the greater good. As they descend into the deeps, they quickly learn that not all monsters work for the Regime.