Zhenya suffers from still being in in love with Cyril, her husband, who has left her, so she decides to bring him back. In her desperation, she casts a spell called "Black Wedding", a magical ritual known for its great power and irreversibility. After the ritual, her beloved husband comes back to her, although his love becomes a deadly obsession: he is even eager to kill Zhenya, so as not to share her with anyone. When the maddened Cyril dies in an accident, the spell does not stop: because even death will not part those who were betrothed by the demon of the ritual.
—exe_malaga93