You play as one of the human rebels (Frank Harrison), who's currently in his hideout outside City 17. You wake up because the Citadel exploded, which was caused by our known Dr. Freeman with the assistance of Alyx, the daughter of Eli Vance. The evacuation of City 17 has begun and you are too close to the city. You have no choice and have to leave your house, to fight your way back to City 17 and join the evacuation train. In the house are some resources but don't forget your HEV suit and go. The game sets in the time of Half life 2 and its episodes (i.e., explosion of the citadel, the crash of the combine stalker train in EP1, and the car of EP2).