USSR, autumn 1989. A huge empire is bursting at the seams, this glacier is about to break through the dam of diplomacy and military alliances and rush down, sweeping away everything in its path. Captain Nechaev is forced to return to duty after a failed special operation. In Moscow, a colleague asks Nechaev to follow the Berlin music hall artists who are capable of transmitting encrypted information to an American journalist. This simple task gives impetus to a big story that will begin in Berlin, the GDR, where intelligence agencies from all over the world will clash.