Octavia Melody and Vinyl Scratch are a couple for the one year. When it started, Vinyl told her, that she's an over 1000 years old vampire. Octavia didn't care about that and she kept it in secret from other ponies.

The other day, Vinyl gets a letter from her younger brother, Moonlight Lullaby, that he wants to visit her and meet her girlfriend. Both mares are excited about the visit. But the vampire stallion has a dark secret...