Become a powerful vampire or hunt them down.
Vampires are fast, strong and blood-thirsty entities, which do not like the sun, but don't fear the night, and the best thing is: You can become one!
This mod allows you to become a vampire with all it's benefits and drawbacks.
After being bitten by a vampire or manually injecting some vampire blood you get an effect called "Sanguinare Vampiris" which eventually turns you into a vampire.
Alternatively you can decide to become a vampire hunter and start fighting those evil creatures.
Get an overview about this mod here: Overview