The protagonist of the film is a young guy named Alex. Now he is very worried about his younger brother, since he has had nightmares for a long time and does not allow fears and rather strange fantasies to live. The thing is, he often sees monsters and is therefore afraid of the shadow. Parents, like Alex himself, are well aware that children at that age often come up with something, fantasize and then believe in it themselves. Therefore, they cannot help the defenseless child, and they refuse to recognize their existence. All this causes suspicion of Alex, and he decides to correct this situation on his own and find some way out. Together with their company of friends, they begin to hunt for these monsters and do it in a game form. And everything was fine until the guys met a real monster and now their game takes quite different twists and turns.