

Joseph, heir of a top-tier family, is forced by his grandfather—who threatens to kill himself—to agree to marry the eldest daughter of the Smith family. But Joseph refuses to marry a stranger. Determined to choose for himself, he changes his name, goes undercover as a nanny in the Smith household, and sets out to evaluate the looks and character of the family's four daughters.

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.

Quila Yale, a double-award-winning actress, unexpectedly transmigrates into the role of the wicked stepmother, Lena Yale, from a show she once starred in.When a little kindness toward her stepchildren unexpectedly activates the "Mom's the Best System", she's able to provide lavish meals even during a famine. Through shared hardships, the children's suspicion turns into genuine love, finally seeing her as their true mother. By the time their father, the general, returns from war, this family is finally whole again.

Troy's retirement life was peaceful, far from the violence and the turmoil of the financial markets. He never expected, however, that his own son would pull him out of it to work as a security guard at the company. Troy had no choice. It was his son after all. What he never imagined was that this job would somehow lead to him finding a beautiful CEO wife.