Marina... How could she pull the trigger so recklessly? Polina Matua still did not believe that her best friend committed suicide. Was there really a terrible secret in Marina’s life and the only way out was a bullet?.. Soon Polina was convinced that she didn’t know much about her friend! A mysterious stranger who called himself Perez contacted her and demanded the return of the key that Marina allegedly left her. Polina could not understand what it was about, but she was given only five days to search for the mysterious key... It looks like Polina will have to forget about personal happiness! But she had just divorced her disgusted husband Luke and was about to build her life with a new lover...