On December 25, 2014 the famous Alexandrov ensemble, commonly known as the Red Army Choir, was killed in the plane crash when heading to Syria. Thousands of musicians, opera singers, dancers, conservatory and music colleges students from all parts of Russia respond to the call to revive the unique collective. The film follows the discordant recruits on their ultimate challenge to merge into the monolithic power of the army choir nicknamed as a 'singing weapon' since Soviet times.