My Sister's Love (2014)

Lyuba, a medical student, has just lost her beloved mother. Very soon Lyuba learns that her careless father, a rake and a drunk, is not her biological dad. The desperate girl starts searching for a real father, whom her mother's friend told her about. Contrary to the fears, her father and stepsister Katya warmly welcome her and accept her into the family. In addition, she finds a true love - her new boyfriend Andrey is very serious about their relationship, and in her dreams Lyuba is already walking down the aisle.. However, all plans are ruined by a fateful combination of circumstances: Andrey turns out to be her sister's fiance.