A young fan of ufology visits the remains of the military reserve in which supposedly one of the most extraordinary episodes of contact with extraterrestrials in history took place. The forest ranger will have to accompany her, through the forest, to the abandoned military barracks, but the sudden irruption of a creature that lives in the depths of the forest, will evoke the young people to a macabre game of cat and mouse that will take them to the bowels of hell.