Trust the oceans will subside Trust the migrants will adapt Trust your ex-brain will serve you ¿¿In the 2050s, our predicted future is reality. The climate has changed. People flee the coasts and the heat zones to survive. Refugees reshape the world. And yet, through technology we adapt. Some of us even thrive. Our external brains, or ex-brains, show us how to solve our problems, help us predict and overcome. We trust, and we move forward. Joe Watson, a pioneering lawyer, and his wife Evie, a predictive psychologist, helped build this new world. When it turns against them, can they maintain trust in their future?