Three years ago, the Lin family, a family of monster hunters, was ostracized by society and had no choice but to work in the business, and eventually build a family for their descendants. Immediately afterwards, Miss Lin disappeared unexpectedly and was suspected to have been abducted by her former subordinate, the defeated ghost king. In order to find his eldest sister, the young master disguised himself as a woman and searched for clues. At this time, a mysterious woman personally told the young master of the Lin family some secret clues. What is the identity of the mysterious woman? Why do you know the clue? What was her intention?