While aimlessly wandering around Habuksung, Sanmehyun with his uncle, Jinha unexpectedly meets Suli, a mixed-blood Han and Molgol, and falls in love with her instantly. Unfortunately, their farewell is imminent due to the death of Suli's mother. Despite the separation, they catch glimpses of each other from afar, with Suli waiting for Jinha every two weeks at a nearby arbor. However, Jinha's fate takes a drastic turn when he is arranged to marry Namgoongjun, a local Han tribe member.
Jinha discovers a family secret from his deceased uncle and vows to avenge his parents' death by training to become a skilled swordsman. In a cruel twist of fate, Jinha and Suli cross paths again, but this time as enemies. Their once simple relationship becomes even more complicated as political powers Joowonjang and Jinwooryang compete for dominance. The story becomes a tangled web of intrigue and conflict, keeping the audience on the edge of their seats.
