Chu Yin applies for a job at the Liang Corporation and, for no apparent reason, catches the eye of the younger Liang brother, who proposes that they "live together."
Chu Yin is thirty and has a son around ten years old. Liang's second son says he'll pay her, and Chu Yin agrees.
But Mo Lang, the eldest son of the Liang family, looks down on this woman. He thinks she isn't good enough for his younger brother, so he offers her even more money to stop her from living with his brother and move in with him instead. Chu Yin agrees again.
So Mo Lang sneers, "Woman, you're so stupid!"
But after they move in together, Mo Lang slowly realizes that maybe he's the stupid one...
