Break out of a stuffy metropolis to a warm sea - what could be more beautiful than hot summers? Nadia Mitrofanova was happy: she and Dima will spend these few days in the south together! Even if he is passionate about his journalistic investigation, she is ready to help him find out who is really to blame for the death of a girl under the propellers of a yacht. But soon Poluyanov was already persuading Nadia to return home: their rest was becoming more dangerous and unpredictable every day. After several people involved in this case died - of course, allegedly by accident! - the journalist and his girlfriend began to seriously fear that they might be in their place...