A young nun named Alicia is attacked one night in her church by Albert, a handsome vampire. Despite her struggle, she is no match for him. His bite injects her with a powerful aphrodisiac, leading to a night of forced intimacy that Alicia wakes from believing it to be an erotic dream. As she goes about her duties the next day, she feels a strange sense of loneliness and begins to miss a wolf she once nursed back to health. Albert returns the following night, and Alicia is forced to realize the previous encounter was real. Under the influence of his aphrodisiac, she spends several more nights with him, and against her better judgment, she starts to grow accustomed to his presence.

The situation becomes more complicated when Alicia learns that bodies have been discovered at a church in a neighboring village, victims of vampire attacks. Suspicious because Albert has never drunk her blood despite biting her, she confronts him and demands he leave. To her surprise, he complies. However, another vampire named Richter soon appears at her door, and she realizes he is the true murderer. As Richter attempts to assault her, Albert returns with a pack of wolves and drives him away. It is then revealed that Albert was the injured wolf she had cared for in the past. Through her kindness, he had rediscovered his heart and fallen in love with her. After Albert is severely wounded in the fight, Alicia willingly offers him her blood, having accepted her love for him.

The story unfolds across a gothic setting where their dangerous romance faces the constant threat of other vampires, along with priests who hunt the undead. The narrative focuses strongly on the erotic encounters between the two, exploring the fine line between compulsion and genuine affection as a sister of the church and a vampire find salvation in one another.