Student Danila was incredibly happy when Masha invited him to relax on the Black Sea. It so happened that the daughter and mistress of a famous crime boss happened to be at the boarding house where they were staying. The bandit hid them there because they were in danger of death. It would be better if Danila and Masha didn’t know about this, but... someone else’s secret turned out to be a trap for them. In addition, it turned out that the exit from the boarding house was blocked and the telephone connection was not working. The alarming premonitions did not deceive the young people. Soon events began that turned a serene holiday into a real criminal war...