Terminal Gamer's review of Episode 2.
"Half Life 2: Episode Two begins right where Episode 1 left off. The Citadel has come crashing to the ground, City 17 is in ruins, and your train out of dodge has derailed. You awake to find Alyx outside, thankful you're alive. She helps you out using the Gravity Gun, and thus begins your mission.
Host to a data card that the Combine desperately wants and needs, Alyx and Gordon must rush to White Forest, the resistance's new base in the wake of City 17's destruction. The game follows Gordon and Alyx as they make their way across the countryside that surrounds City 17 and to White Forest, where Doctor's Vance, Kleiner, and Magnusson are waiting for their arrival with the data, which is needed to launch a missile that will close the Combine portal, leaving the Combine trapped on earth without reinforcements...."