Willa Reed, a childcare specialist, transmigrates into the body of a widow cast out by her in-laws the moment her husband dies. With her daughter in tow, she enters the Duke's mansion as a wet nurse, raises the young master, and even helps the stroke-stricken Old Madam regain her mobility, working her way up to head maid. All she wants is to save up, leave the mansion, and live a quiet, modest life. But her presence soon catches the eye of the young masters of the house.