A regular girl, Masha, is proposed to by Sergey, but his wealthy mother deems her unworthy due to her orphan upbringing. She uncovers Masha's secret and wages a ruthless battle against her.

Masha Sorokina is happy - Sergey, a man she loves, proposes her to marry him. But Sergey's mother, wealthy and haughty Margarita, believes that a regular girl who has grown up in an orphanage is not worthy of her only beloved son. She will find out the secret Masha has been keeping for many years and declare a merciless war on her.