I know this is an old one, but I´d like to have some original and new stuff to this topic. So I present some of my inventions and I hope you all will come up with new and better ones. Metal has so many branches...

Beautiful princess is trapped in a castle guarded by a dragon. How do different types of metallists save her.

FUNK METAL: The metalhead comes to the castle in loon pants. He drags a sword out of his afro and kills the surprised dragon. Then he goes into the castle and while screaming sentences like "I´m a sex machine, man!" he doesn´t go out for something about 12 hours.

SCI-FI METAL: Spaceship kills the dragon with a laser beam fired from the orbit and beams up the princess. Her saviour makes love to her in a decontamination shower, then finds her a new planet to live on.
*If the princess is Klingon, they destroy the castle and the dragon in one single shot, then go to warp.

LOVE METAL: Knight arrives with his nails painted black, black cap and a cigarette in his mouth. He falls in love with the dragon who can´t resist the charm of the knight. They invite the princess and make a nice threesome.

TROLL METAL: Knight summons an army of trolls. They slay the dragon and then brutally rape the princess who is dead before the knight can even enter her room.

DETHKLOK METAL: Dethklok arrive with corpsepaint on their faces and traditionally stupid faces. They kill the dragon with their dead-phones (and accidentally kill the princess too), "blow their own job", then drive murdercycle back to Mordland.
*Although they could just summon Mustakrakish and let him kill the dragon instead. There is also a great possibility that the dragon becomes the greatest fan of Dethklok which means certain death for him.

GEEK METAL: Knight kills the dragon with his sword +5 against dragons, saves the princess, then pauses the WoW and goes to eat pizza.

MELODIC DEATH METAL: Knight arrives to the castle with his brand new V-shaped guitar and a keyboard player. After an introduction containing the word "fuck" at least 50 times they start to compete in playing solos as fast as they can. Unfortunately the dragon doesn't notice that knight and his servant have spitted whisky on it several times, and sets itself on fire. The knight gets too drunk to be interested in the princess and goes somewhere else while kissing the keyboard player.

COFFEE METAL: The knight burns dragon´s skin and scales with coffee and glues it with cream. After that the knight dies from heart attack and the princess has no one to "reward" for saving her.

ALMOST ORTHODOX DOOM METALLISH LOVECRAFTIAN-JUNGIAN KALEVALA AVANT-BARD METAL: The knight starts to screech in several languages. The dragon is disgusted and refuses to fight with such a hideous creature. Knight stays for a few days when he finally ends the song. After that he remembers nothing from what he was going to do and so he goes back to the place he came from with tormented look in his eyes. After he walks a few miles and wants to drink from a river, Cthulhu comes out of the water and eats him. Thus summoned, he devours the dragon, the princess and the castle and when he realizes the stars are not right yet, he returns to R'lyeh and goes to sleep again.

NWOBHM: The crowd of musicians arrive at the castle. It wants an autograph of Freddie Mercury and while Freddy´s writing it, John Bonham passes by to the castle where he just trows up in the bed and then passes out(away). Dragon gets distracted by Eddie (Iron Maiden) and the other bands kill the dragon by stabing it´s back and making noises with high pitched tones on their guitars. Then all of them move into the castle where they get infected with AIDS by Mercury and die in a few years.
*I´m a big fan on Queen and Freedie Mercury especially, It's a joke, ok? ;o)

DUSK METAL: Firstly, there is almost infinite soundcheck during which dragon falls asleep from boredom. After the eternity there flyes Dani and others in form of vampires directly through the princess's window. Dani consorts with her in the middle of a pentagram with five lit black candles. At the end of the copulation he cuts her veins and she turns into his devoted slave. As the matter of fact he enchants the dragon to be his slave too and redecorates the castle to have a tank in the garage and two skeletons in the kitchen. In the end, he makes a great concert where his new mistress dances on the stage in succubas costume and the dragon takes care of the fire effects and the light-show.