The fates of these people take a twisted turn because of "hwanhonsool" (the souls of the dead returning to the living). In the village of Daeho, Jang Uk (Lee Jae Wook) comes from the noble Jang family. He harbours an unsavoury secret about his birth, which is the talk of the village. He is a troublemaker. Jang Uk meets Mu Deok (Jung So Min). She is an elite warrior, but her soul is trapped in a physically frail body. She becomes Jang Uk’s servant, but she also secretly teaches him how to fight. Seo Yul (Hwang Min Hyun) comes from the noble Seo family. He seems perfect, with good looks, intelligence and strong martial arts skills. Go Won (Shin Seung Ho) is the crown prince of Daeho. He hopes to become a generous king.