What will you do if your calm world and ordinary life to which you are accustomed suddenly cease to exist? What would you do if you suddenly find yourself in a place you've never seen and where everything is different? What will you do if you find yourself in the Other World?! In a world in which there is only fear, danger, a constant struggle for survival, and every new day says that nothing good can be expected? So, during the exercise, a unit of Marines under the command of Major Arkhipov, through a randomly opened portal, moves into the Other World, where it is very difficult for them to withstand the fight for their own lives...