"Closed Level" is a mini-series about gamers who come face to face with real war instead of a computer shooter. A group of carefree young men infiltrates a private laboratory in search of the perfect game. There, a military action simulator is being developed for the army. However, the program turns out to be much more advanced and innovative than they could have imagined. The heroes find themselves on a closed, unfinished level in occupied Belarus, where the game is indistinguishable from reality.