You are Alyx Vance and YOU are humanity's last chance for survival. Since the Black Mesa incident, the Cartel's control of the planet has only tightened, while the rest of the population is parked in the cities. Among them live two of Earth's greatest scientists: your father, Dr. Eli Vance, and you. The game traces the story of an impossible fight against a group of cruel aliens known as the Cartel Against Humanity.
