In a small town called Kirzhach in Vladimir Oblast, rumors have been circulating for a long time about the cursed lake where, supposedly, a few years ago two little girls drowned—sisters with the last name Vyaznikovye. A group of young people, older-school students, goes to that lake to celebrate their friend’s birthday there. None of them takes the tales about the drowned sisters seriously until the evil lurking in the lake awakens…