Vampires and werewolves have existed in relative peace for years. There's no official truce but each maintains their own territories and neither tries to encroach the other-much at-least. But lately, the wolves have become more aggressive. They breed quickly and their territory can no longer support the full pack. The thick vampire forests are a tempting prize.
The elders remember the wars and know the clan can't afford another. The pack is isolated, while the vampires can call upon other covens for aid. If a war starts, the wolves will lose.
The young never listen though. Their bold, strong and stupid. Talia, a wolf just come into her powers, convinces others to enter the vampires forest. A quick hunt will bring them deer and prove the vampires are too old and weak to maintain their borders. It is, of course, a disaster. The vampires are old but their strength grows with age. They never age and have eternity to perfect the art of war. The young wolfen hunters don't stand a chance.
The vampire lord makes his way down the line killing each werewolf for their audacity and finally comes before Talia. There he stops, his heart beating for the first time. Each vampire is given a single bride, a woman who will blood him. It's incredibly rare for a vampire to find his bride but it is considered the greatest blessing there is. A blooded vampire becomes stronger and faster.
But how to keep a werewolf as a bride? Wolves form no such bonds, they mate indiscriminately and raise the pups as a clan. How to keep a young, aggressive female trapped in the vampire keep when all she wants is to run the woods?
I see this rp taking place in either modern or medieval time periods and being either a dark, extreme thing or almost sweet. Depending on how you want to play it. Talia can either fight violently to escape or find she enjoys the luxuries of being a pampered bride.