Allen's son is in danger. A rare form of epilepsy is damaging his brain and Allen's insurance is cutting him off. To cover the costs, Allen returns to being a high-tech mercenary. Not exactly ideal for a father who enjoys carbs far more than stomach crunches. After his first mission back, Allen soothes his wounds before getting a message from Eamon Tor, America's first trillionaire. Tor tells Allen about Eden Therapy. It treats terrible diseases but can also drive patients insane. Still, it's exciting news--especially with the offer of complete care for Allen's son as a reward. But Tor has a surprise. It's a choice that puts Allen's conscience, marriage, and abilities to the test, and sends his ragtag team on a dangerous operation halfway around the world.