It is 1998. The Resonance Cascade is tearing the world apart from Black Mesa research facility in New Mexico. In such a catastrophe, it is every man for himself. You are a scientist, Brennen Daniels. You are trying to escape Black Mesa alive. HECU marines are sweeping the area and Vortiguants and Zombies are everywhere. You must find a way to escape the complex and flee to the city to get food. Warn as many people as you can. Then go into hiding in the arctic.