Two souls transmigrate. In their previous lives, he died for her because of a strange dagger. In this life, she desperately searches for traces of him. She never expected that the quiet, devoted good man from his past life would turn into a rotten playboy who lies through his teeth, neglects his studies, and is shamelessly lecherous and boorish.
Fortunately, his family is under a curse: each heir can sleep with only one woman in his entire life, and after doing so, he becomes utterly devoted to her. The lecherous bad boy is deeply wary of this. He goes around flirting with women while carefully "protecting" himself, and that is her one advantage. But the scoundrel has actually trained an iron army to break the curse. Should she help him or sabotage him? Never mind that for now. First, she has to chase away the butterflies around him.
One wants to fulfill his grand dream of marrying eight or ten concubines, while the other wants to ruin his womanizing plans. In the end, who will win?
The lecherous bad boy comes up with one devious scheme after another, and her brow twitches as she fiercely swings her little fists. Whether it's a talented beauty with both brains and looks, a skilled martial arts heroine, or just some little maid from the roadside, she will never let him get his way.