A story about two sisters who, after the death of their parents, ended up in different families. Katya grew up in the house of her own grandfather in wealth and prosperity, while her younger sister Olga is in extreme poverty and hardship. Olya got under the wheels of a car and lost her memory. And the driver, in order to hide the crime, took the girl into his family on the rights of "acclimatization" and gave her a new name. However, many years later, life brings the sisters together again, but already as rivals in love with the same man. Do Katya and Olya recognize each other? And which of them does Vadim really love? Insidious intrigues and family secrets, love and hatred, thirst for revenge and forgiveness, the struggle for life ... What other trials did fate prepare for them?