Five years ago, Isabella, an elite operative, was forced to leave her young daughter Nini behind for a covert mission. Five years later, she returns with a hundred-billion-dollar fortune and a killer's arsenal of skills—only to find her daughter being abused as a servant by her stepmother and stepsister: starved, beaten, and taunted as a "motherless bastard." Everyone thinks Nini is a helpless orphan. They have no idea her mother is a woman who can make an entire city tremble. A relentless campaign of domination and revenge unfolds—from the schoolyard to the gilded halls of the elite, from the boardroom to the dead of night. Whoever laid a hand on her daughter will pay a price not even a hundred billion can buy back.