Jin Jumo trades a year of her life to business magnate Rong Mochen for financial security, entering a carefully constructed arrangement where emotions remain locked away behind professional boundaries. Their first encounter sets the tone—cold and distant, with clear expectations of obedience. Jin Jumo plays her role flawlessly, never wavering from the invisible line drawn between them. What she didn't anticipate: pregnancy. When their contract expires, Rong Mochen refuses to let her go, somehow knowing about the daughter she never mentioned. Before Jin Jumo can process his impossible knowledge, tragedy strikes—a targeted car accident claims the life of a seven-months-pregnant woman, transforming the ruthless tycoon into something darker, something consumed by grief. Four years vanish. Now, Jin Jumo's two children conspire to solve their mother's loneliness, determined to find her a new boyfriend. The older boy watches Rong Mochen's lavish engagement ceremony unfold on screen, coldly unmoved. When his younger brother innocently asks if "the old man named Rong" is really their father, Jin Jumo's world tilts sideways. He remembers. He's always known. And he's coming back.