Kira is married to Dmitry, a successful businessman, and, at first glance, they seem to be the picture of a happy couple. But in reality, both have long been unhappy in this relationship.

Kira is preparing to tell her husband why she has been deceiving him for so many years. Meanwhile, Dmitry is involved in an accident that marks a point of no return for his family and another couple—investigator Igor and his wife Rita.

The investigation into the incident will bring Igor and Kira together. As they try to piece together what really happened—whether it was a road accident or a deliberate murder—they will uncover unpleasant truths about their loved ones and reveal their own secrets.