Du Yuebai, a college student, has been working as a part-time personal agent for three years, representing people after breakups, apologies, and attending her ex-boyfriend's wedding... She solves people's problems and is a leader among agents at 9998 Firm. However, she hid her work from her boyfriend Xu Peiran because of an ulterior secret. As graduation approaches, Du Yuebai learns to cherish his relationship with Xu Peiran more and more after experiencing a series of agency cases. In order to solve the urgent problem between Liao Ze and his celebrity girlfriend Chang Xinhui, she took over the last commission in her career and became Liao Ze's surrogate fiancée. However, she did not expect that her boyfriend Xu Peiran was Liao Ze's younger brother. Now, the boyfriend turns into the brother-in-law, the fake mother-in-law turns into the real mother-in-law, and a series of ridiculous dramas begin to unfold in the Liao family.
