Here's a plot summary as posted on IMDB.com:
Following the Soviet Union during the height of the Cold War, RED ARMY tells the story of the nation's famed Red Army hockey team through the eyes of its captain Slava Fetisov. Whether he was pitted against enemies in the political arena or on the ice, Fetisov's story provides a rare glimpse behind the Iron Curtain of the 1970s and '80s by mirroring the social and political forces at work in the world around him. While helping pave the way for his nation to cross over into the next century, this one man demonstrated how sports could not only be an avenue for creative expression in a world determined to suppress it, but also be something so inextricably intertwined with a nation's cultural and political identity.
And here is more from Jason Kay at The Hockey News.
The movie, which debuted at the world famous Cannes film festival in 2014, and is currently being shown at the Toronto International Film Festival. The movie is expected to be released in North American theatres in 2015.