A scientist buried in his work to avoid the pain of his wife's death, he brings a robot home which looks just like his wife. The robot carries the burden of making her two daughters "happy". Tzu-Yu, a scientific girl who inherited her father's talent. She has not only to face the huge changes caused by her robot mother, but also the pressure of the competition. Moreover, the romance between her and the gifted transfer student Yi-Hsiu, making her sip the sweet and sour taste of growing up.

A housewife, pushed to the edge by her husband’s relentless hoarding and his repeated refusal to heed her pleas, plots revenge. However, an unexpected turn leads her to empathize with the motives behind his obsession, bringing her scheme to a sudden halt.