Ordinary girl Mia is sold off by her fiancé and stepsister to a sinister underworld force. Cornered with no way out, she happens upon Roman, the master of the underground power. Roman rescues her, and the two strike a contract marriage—cooperation in exchange for protection. Enduring silently, Mia grows, and with Roman's help exposes every crime of her ex-fiancé and stepsister—seizing family property and harming her kin—and hands the villains to the law. Along the way Roman is moved by Mia's tenacity and kindness, lets go of his obsessive possessiveness, and truly protects her. Mia sheds her timidity, independently takes over the business empire, and together they fight the shadowy villains, guarding her family and everything that is hers—conveying the positive values that good and evil are repaid and women stand strong on their own.
