After unravelling a series of mysterious, interconnected cases, Maomao finds herself caught up in another troublesome situation again, this time involving a bitter family feud surrounding a famous royal goldsmith and a cryptic will he had left behind for his sons.

Meanwhile, a sly and enigmatic military official enters the scene, adding further intrigue to the unfolding drama.

Who is this crafty man, and what is his role in this complex webs of secrets?