The USSR is living through a technological Golden Age. The Russian Cosmos landed on the moon while the Amercian satellites fell from the skies. The Western research facilities, such as Black Mesa, largely relied on reverse-engineering the results of their Eastern counterparts. Comrade Yanayev has decided to rebrand the USSR to "The Combine", in an final struggle to unite all the world under his new Socialisim of Slavery.

You are Gorden Freimann. Your mission is to infiltrate the center of Russian research, Berlin, to establish contact to our field teams, and prevent the Combine Ruskies from ushering in a New World Order.

Viel Glück, Agent. You're gonna need it.