Ravaged by a powerful demon that comes to him every night, Count Erwar del Diav has been enduring the pains and pleasures of their relationship in silence. His despair deepens when he learns this is the consequence of a curse placed on him by an unknown person. Meanwhile, Erwar’s powerful yet possessive friend, Grand Duke Kaijack, arrives at the Diav Estate to take Erwar back to the capital. Although he longs to escape the clutches of his friend and the demon, Erwar can do little to gain his freedom. And yet, everything is also not as it seems...