Noah, a human teenage boy, infiltrates Saint Michael's Academy ruled by the vampire clan on purpose to uncover the truth behind his elder brother Gabriel's disappearance. He openly provokes the entire vampire faction with a plate of garlic pasta, successfully drawing the attention of Silas, the tyrannical and bloodthirsty Vampire Crown Prince. Silas marks Noah as his exclusive pet, yet he falls into bizarre hallucinations whenever he feeds on Noah's blood, realizing that Noah's blood holds a fatal allure for him.
Exploiting Silas's possessiveness, Noah advances cautiously step by step, secretly gathering evidence of the vampires' persecution of humans. Meanwhile, he discovers Silas has been obsessively monitoring him for years. As his investigation deepens, Noah uncovers the secret of the bloodline known as the Venom of the Progenitor — his blood can not only manipulate vampires, but also embodies the ultimate power that nearly annihilated the vampire clan five hundred years ago.
