in which lu han is a general of the northern capital who must somehow win the war in their favor.      

In which Sehun is an avid lucid dreamer and meets a boy called Luhan in a dream. Sehun isn't so sure if he's a real, or simply a dream character. 

Lu Han was an explorer, an adventurer but only in his dreams.  But Lu Han was determined to make his dreams a reality.