"Happiness of Serafima" is a Russian melodramatic series about the fate of a single mother who escapes from her tyrant husband. Serafima Kuznetsova lives with her son and grandfather Yasha in a small village called Soloviny. She gets a job as a plasterer and soon opens her own construction business. But her life takes a turn when Grandfather Yasha dies without leaving a will in her name. Soon, a distant relative of her grandfather, the astronomer Alexey Govorov, arrives to claim the inheritance. However, Serafima decides to fight back.