The Carters head to the creek and dried-up spring, but their investigation is quickly cut short by PowerCore's surveillance: a robotic dog and a spying drone. Guided by KAELA's intelligence, Ben and Emily follow a lead to a dormant rail spur. What they find there—a massive shipment of boxcars from a mysterious robotics company called Tharox—shatters the illusion of a simple battery factory and confirms the fight for their home is far more dangerous than they imagined.