In the dark and twisted world of The Abysmal Flower, Sylvia Pedelian finds herself entangled in a gruesome tale of love and vengeance. The story revolves around Sylvia's quest for retribution after her brother, Cassis, vanishes mysteriously. A shocking turn of events occurs when a Korean student is unexpectedly transported into the novel's universe, inhabiting the role of Roxana, a sinister figure linked to the Agreces, long-standing rivals of the Pedelians. Roxana, daughter of the malevolent Lante who holds Cassis captive, hatches a daring scheme to rescue her brother and, in turn, liberate herself from her family's dark legacy. Within the sinister confines of the Agrece fortress, marked by treachery and savagery, Roxana witnesses the heinous deeds committed by her kin, biding her time until the inevitable reunion with the imprisoned Cassis. When Roxana's interest in personally tormenting a prisoner is piqued, she seizes the chance to clandestinely nurse Cassis back to health, revealing a compassionate side amidst the brutality. As Cassis observes Roxana's sacrificial acts on his behalf, disregarding her own well-being, he vows to repay her kindness in the future.