Seriously the synposis of this drama was so confusing, who wrote it?

I dont understand why many people rate this drama so high ? This drama is hella boring ( thought it would begood because of the male lead)

BAsically this drama is about the female lead's past romantic experiences and how those experiences got her killed.
Like she is suppose to be portrayed as someone with a lot of power but yet she still looks naive and confused. I cant even continue to watch the drama, it is so horrible.