Based on a Korean folklore. Its the story of Arang, played by Shin Min Ah a ghost who sets tout to find her killer with the help of the Magistrate, played by Lee Jun Ki.
Its a Fantasy Romantic Comedy. This is the comeback project of LJK after being released from military. I believe this is also the first period drama for SMA. Its funny and touching at the same time. I love the twist in the ending... Overall I'd give this 4.5 :)