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.

For generations, Windshine has chronicled the exploits of young men on quests to become heroes. Most suffered brutal deaths, and distrust of the Dark Elf grew until rogue officials offer sixteen-year-old archer, Woo Jin, the chance to eliminate her. If he succeeds, they will name him hero. If he fails, he can never return home.In the company of musicians, veterans, and the wielder of the glyph blade, Woo Jin sails from Jeju to the mainland. Their quest—to evacuate Goseong, the village of children, from the devastated borderlands of South and North Hanguk. Unbeknownst to Woo Jin’s companions, he studies Windshine for weaknesses even as he wonders what evil lurks in the Dark Elf.Reaching the village, the companions encounter a fierce horde of northern soldiers. Battling to survive, Woo Jin spots the perfect opportunity to fulfill his mission, but will he assassinate the Dark Elf to become a hero?