Having received a Valentine’s card, I, Natka Potapova, like any normal girl, was anticipating a love confession. When, if not during your student years, should you have fun and go out? But the card said: “A woman who cannot be faithful is not worthy to live.” What is this? A stupid joke? Revenge of my ex-boyfriend Andrei? The evil prank of his current girlfriend Nastya? However, not even a day passed when it turned out that the first beauty of the course, Marina, received exactly the same note - and died under strange circumstances. Valentine's card turned out to be a death warning! But I won’t allow myself to be killed, and my friends will help me protect myself from an unknown maniac. One thing scares me: what if one of them is a maniac?...