For five years, secretary Caroline has been billionaire Nathan's secret lover—but never his fiancée. She finally quits, only to reveal her true identity: the sole heir of the Montgomery Group.Nathan's scheming fiancée Vivian teams up with Caroline's cousin Oliver to destroy her. At the brink of death, Nathan realizes the truth: it was Caroline who saved him from a lab explosion years ago, permanently damaging her hands—not Vivian.Caroline decides to reclaim her father's empire. She strikes a deal with Nathan: he must be her "secret lover" for three months, enduring the same humiliation she suffered for five years. Through betrayals, kidnapping, and corporate warfare, they finally see each other clearly.Nathan sells his shares and cuts ties with his own family to help Caroline fill her company's billion-dollar deficit. In the end, he gets down on one knee. Caroline says yes—two broken people, finally choosing each other as equals.
