Since she was a child, Sooha has been told to hide her extraordinary abilities to avoid being mistaken for a vampire. Accused of being one and blamed for her childhood friend's death, Sooha enrolls at Decelis Academy, a night school where, supposedly, supernatural beings like vampires and werewolves cannot enter.
At the academy, Sooha meets Heli, a student who offers her friendship even after learning her secret. Heli introduces her to his close-knit group of friends—Jaan, Jino, Shion, Jakah, Noa, and Solon—each of whom possesses unique powers of their own. Yet their bond with Sooha feels more than coincidental; they seem inexplicably drawn to her, as though they'd do anything she asks.
When a recent murder is attributed to a vampire, Heli and his friends' mysterious past begins to unravel. While they try to protect Sooha from the dangers of the supernatural world, she becomes entangled in the ancient rivalry between vampires and werewolves. As the tension escalates, Sooha starts to realize that the creatures she despises may be closer to her than she ever imagined.