In the midst of World War II, a dhampir—a being born from a human and a vampire—named Rayne works alongside resistance fighters to take down the Third Reich. As she navigates through a war-torn Europe, she discovers a plot by the Nazi regime to use vampire blood to create an unstoppable army of vampire soldiers. Rayne encounters a formidable Nazi commander who has already been transformed, making her mission all the more urgent and dangerous. The resistance fighters and she launch a series of attacks to sabotage the German efforts, but the Nazis are relentless in their pursuit of this dark power.

Rayne's journey intersects with a group of resistance fighters who assist her in storming a heavily guarded research facility where the Nazis conduct their deadly experiments. With strategic prowess and fierce combat skills, she aims to thwart their operation and prevent the creation of a vampire army. As the Nazi threat intensifies, Rayne must confront not only the supernatural beings but also the moral complexities of war, trust, and survival. Amidst the chaos, she grapples with her own nature and the dark legacy of her vampire lineage, positioning herself as a crucial force against the unfolding horror.