"Faithful Friend" is a Ukrainian melodramatic mini-series that tells the story of Katerina Smolina, a music school teacher. She loses her beloved husband in a car accident. Her close friend Maria, who was in the same car, ends up in a critical condition and is hospitalized. Maria leaves behind her 7-year-old daughter Inna, whom Katerina takes in. The mother of Katerina's deceased husband blames her for his death, as it was Katerina who asked Andrei to take Maria to the sanatorium.