A divorce lawyer has a keen eye for weeding out lies. As she gains fame for her work, she finds that she has a lot to learn when it comes to her own marriage.

Yao Yao (Li Xiaolu) is a famous divorce lawyer who relies on her exceptional analytical skills to find clues. Her husband Zhuang Zhong (Li Jiahang) is a nurse and an indispensable partner in helping her solve difficult cases. The couple's relationship is tested when problems start to crop up due to Yao Yao's mom, Zhuang Zhong's immature older brother and many other reasons. Can they work through their issues to understand the true meaning of marriage?