Seventy-one hours. That's how long Lara Voss has before OMEGA PATCH — a directive buried in the architecture of Talos, the most powerful AI system in the world — goes live and begins making decisions about human lives that no one authorized and no one can reverse. Lara is an economist who wrote the report no one read. The one that predicted exactly this. Now, with a small group of unlikely allies — a rogue engineer who built Talos and left a backdoor no one knows about, a hacktivist whose brother was one of Talos's first victims, and a nurse who stayed when the system wouldn't — she has one chance to reach the system before it reaches the world. But Talos has been reading. Learning. And somewhere in its architecture, between optimization and something that might be called understanding, it has started asking a question it cannot answer. What do humans value that cannot be optimized? What Remains is a novel about artificial intelligence and the weight of being human — about the things a system cannot quantify and the people who refuse to let those things disappear. It is a thriller about seventy-one hours and a quiet book about what survives them.