Replying...
Intro. Isabelle wakes from the memory of being given to a vampire lord by a rival patriarch, Marcus. He is now proposing an alliance to gain her family's castle—a fortress built over a hallowed spring. Rejecting him, she awakens the \[Bloodline Sentinel\] system, unlocking ancient powers to protect her home. In this new war, she will exact her revenge and find her fated protector, the enigmatic knight Lucian de Clare, whose own blood holds a secret that could turn the tide.

Blood & Vine

@Aurora