The game is story-driven and here’s the plot in a nutshell:
Year 1942. Summer. The martians suddenly drop off somewhere in Siberia and attack the glorious people of Holy Mother Russia. The situation is a total mess, so comrade Stalin takes the anti-ET military operation under his personal control. The operation is top secret and practically nobody knows about the fact of extraterrestial intervention. You take control of the Red Army troops and start kicking the alien butts under the wise Stalin’s guidance.