Overall one of the best action fantasy k-drama. The story was about land of Daeho & its mages, fictional world which not existed in history & maps. Jang Gang, one of the best mage was tricked by the king to perform soul shifting. Once done, the dying king impregnated Jang's wife. Years later, Jang Uk, the son had grown up. Jang placed a barrier into his "illegitimate" son so he couldn't be a mage. Jang Uk desperately trying to find a master who could undo the barrier, until he met with Mu Deok, a blind girl which was actually Naksu, an assassin who just soul shifted to avoid death. Strange thing happened to Naksu because she lost all of her powers but regained her sight as Mu Deok. Together, the two made a mutual relationship, to help each other to gain their powers back.
The acting was what you could expect from a k-drama. The soundtracks were good. The fx was also not disappointed. The action scenes were exciting. If i had a complain, i noticed that Go Youn Jung performed fighting better than Jung So Min. When I saw JSM's fight, it gave me the c-drama wuxia vibe : lots of close-ups.
I'll give a solid 9/10. It's an amazing show. Recommended.