讲述只有3.5颗星评价的妹妹（温贞菱 饰），人生最大梦想是打败5颗星的姐姐（李霈瑜 饰）。

Jie and Xuan are a happy same-sex couple but Jie is having an affair; she is torn between her recent love-at-first-sight “true love”, and her lifelong partner whom she’d sworn to grow old with. So, the real question is: who is her meant-to-be Ms. Right – predicted by the almighty algorithms?