In this TV-series the events of the beginning of the 20th century in Russia are highlighted. Revolutioners, terrorists, spies - and investigator Putilovskii and his team fight them as best they can.

A successful doctor is visited by her old friend, a famous writer. They used to be close, but their friendship ended when they both fell in love with the same man. At first, their reunion seems to be going well, but as they talk, their old grudges and resentments resurface and threaten to ruin their renewed connection.