This story is a sequel to Twin Night Terror's

Four years have gone by since Silver Howl, once known as Shimmer, has gone missing in the freezing north. Despite Celestia’s best efforts, she has reported that she is unable to track the Lycan as she dealt with suspicious nobles of old, and the new Vampyre and Lycan ones. Now new rumors are popping up as ponies go missing by the border, and Silver Howl suddenly reappears with Ashta, claiming something bad is on the rise.
Astra and Eclipse had been living the good life for once as they settled into their new life happily, but as Astra’s Vampyre friends grow restless with staying on the property and seek life beyond the large land. Astra wants them to stay, but she fears that they will go against Celestia’s wishes and leave anyway.
Heartsong and Paper Poet seek a cure. Not just for them, but for any Vampyre who felt they made a mistake. Yet, does their Lycan “curse” really interfere with their lives?
Soon all ponies on the estate find their home and personal problems dwarfed by the oncoming tide of blood they never saw happening. A war will happen, and despite all that has been done to them, they aren’t sure which side they will choose.
As all their problems happen, chaos is on the rise and a new war threatens to break out between normal ponies, and the somehow increasing number of Vampyres and Lycans. Can it be stopped, or will it only grow worse?