Rebirth (1981)

A good guy from a prosperous family Gena Rusanov studies at the institute, loves a girl and is ready to get married. The bride is happy and is also looking forward to the wedding. And suddenly something happens to Gena. He starts drinking vodka and very quickly sinks to the bottom. But he is watched by good and sensitive people. They will not let Gena finally perish and will help him to return to an honest and healthy life.