A crime story which take action in Riga Sea Port.

When a young man wants to marry a poor girl, her cousin envies her very much. She even makes everybody believe that the main character was in love with her. He escapes from many difficulties in order to find his beloved who also became trapped in a luxurious villa with some strange relatives. The people inside villa are vampires, they were called upyri in those days in Russia. They suck blood of anyone who comes to see them. The young man too much in love so he looses his head and goes directly to the nest of vampires.