All celebrate Halloween, and our hero, Jack O Lantern forced to work. He is engaged in research of anomalous phenomena and it is on this night, all the surveyed points are active. Jack came to a dark forest, where even a dark day, and at night, even with a flashlight is not visible because of fog anything. Jack made all the necessary measurements and was about to return home, but lost sight of the path leading to the exit. Help Jack to find a solution.