As a despised F‑grade half‑vampire, Lucas endures endless humiliation within a cruel pure‑blood vampire clan. Everything collapses when his cold‑blooded pure‑blood younger brother Siras cruelly maims him and abducts his fiancée Aila. On the brink of death, Lucas accepts the ancient progenitor mosquito’s blood gift, gaining formidable power of misfortune transference. He braves brutal underground arena battles, endures imprisonment and torment, fighting his way upward to rescue Aila. Yet the true mastermind turns out to be his manipulative father Victo, who intends to dissect Lucas for his rare bloodline. After bloody fights, painful losses and bitter revenge, Lucas dismantles the old oppressive vampire hierarchy, only to be left bearing profound grief for the irreplaceable person he failed to protect.
