Well, it wasn't exact "buffyverse" dream, but I sure do watch Buffy alot and, therefore, have my mind spoiled. I wrote it down the very next morning I woke up.
Opening scene: Night. Cheap Motel. On the second floor room newly sired blond chick is making out with a human dude. The pair's having fun unaware that someone of minor authority has ordered to eliminate illegally sired girl.
Scene cut to motel's hall, where two men in tweed sit in a coach. One of them is bald and is hidden by a shadow; the other is your regular man in his forties. Hey sit quietly, smoking cigars. The man who's obviously local refers to bald man with: "Aren't you stay in shadow for they say you guys are really hideous?" Bald man's respond drowns in the sudden noise "“ something's going on in this motel.
Blond chick senses he danger, she leaves her lover, approaches the door and cautiously examines the hall. She doesn't notice two tweed men, yet she's scared. She closes the door and rushes back into room. She tells her guy she must flee while hastily dressing up. In a moment "“ she's fled trough the window down the fire stairs. The guy remains completely lost. Right after chick escaped sudden noise and lightning effects happen in the wardrobe and some disheveled man appears. He's surprisingly young though yet he still looks unusual. He barely has the time to tell stunned guy he's time-traveller as room door slams open and two tweed men rush inside.
Time-traveller grabs still shocked dude and they jump into portal that shuts down immediately.
Tweed guys rush out through the hall and down the stairs enraged.
The moment after Drussila enters the room escaping from the guy in leather stalking her. He is Vampire Slayer. He catches her up there, grabs her, and tells her she must go with him "“ she has to sire his wife dying of cancer in their apartment. Drussila refuses, tries to break free from him, but he won't let her go.
They use her vampiric power to teleport and the next moment they appear besides the deathbed-to-be where his poor wife is going through her last moments. As Drussila approaches his wife suddenly appears to be already "changed". She now has fangs and is not going to die anymore.
Another noise-lighting scene in the wardrobe "“ time-traveller grabs Vamp Slayer, and those three flee through the portal.
Dru tries to dissolve too, but nothing happens: revived woman also appears to be powerful angry witch that took shape of probably dead by now wife. She's binded Dru's powers and now orders her to wipe clean the room for the start.
Scene Cut to: Time-traveller, motel dude and Vampire Slayer are seen falling though the chimney into witch's hut somewhere in the deep dark forest.