Men from South Hanguk undertake quests to gain social standing, to stand above their peers, to make names for themselves.

To become heroes.

Few ever return.

Ha Jun, sixteen years old, possesses a glyph sword crafted in foreign lands. Alongside a soldier, a knight, and a monk, he travels across the country to destroy a demon lurking beyond the running trees of Naganeupseong Fortress. Accompanying them is the dark elf, Windshine, who emigrated to South Hanguk from her own war-torn country centuries ago.

Distrusted by the people of South Hanguk, Windshine has the Emperor's protection and is tasked with recording the valiant acts of quest groups battling creatures born from nightmares.

Ha Jun becomes drawn to Windshine as they near Naganeupseong Fortress, but when he discovers the blood connection between the demon and the dark elf, he will either succumb to his fear, or rise up and become a hero.