Mountinskaya is a private resort located among mountains and snow. Flyers are full of mountains cutting through the sky, headlines tempt with tempting offers, happy reviews from vacationers remove any doubts. Mountainsky is the perfect place! To be disappointed in him, you either need to be a snob, or wake up in the middle of the night from a scream and realize that one of the hotel guests is missing. What should students who are drawn into other people's intrigues do? Pack your things and run? The idea is sound, but it’s much more interesting to stay and help the police solve the case! Mountainskaya is an ideal place for your holiday!