

Joanna, daughter to Europe's wealthiest family, chose love over her status and wed David Kerr. She became his behind-the-scenes supporter, using her resources to establish a fashion company for him. At a social gathering, she fell victim to a deceitful drink orchestrated by Vivian, David's childhood friend, narrowly avoiding a compromising situation. In her dire moment, a stranger came to her rescue. Upon regaining consciousness, Joanna was startled to find the infamous "Black Wolf," Ryan Cabell, was the man who had saved her. Assertively, Ryan offered to fulfill all Joanna's desires if she agreed to be his girl.

Sylvie, once the ace assassin of the revolutionary army, was tamed and abused by a general as a "mad dog." While on the run, she was taken in by a priest, but betrayal led to a massacre in the church and the priest's brutal death. She rescued the young Benny, using her body and her skills in killing to forge him into a lethal weapon. Over the next ten years, their bond deepened from master and apprentice, to master and slave, to soulmates—together, they hunted down the general and his political backers. In the end, Benny died shielding her; Sylvie alone stormed the enemy's stronghold, slew her nemesis, then carried his corpse to the shore and cut her own throat, joining him in death.

Following the tragic death of her twin sister Alice, Ariel takes her place in order to enact revenge on Alice's cheating fiancé and manipulative adoptive family. However, Ariel's mission becomes more complicated when she meets and marries billionaire Victor, and must hide her true identity from him.