A romantic drama about a man and a woman who, due to a misunderstanding, have held a crush on each other for over 10 years.

Tae-yeul, a swordsman in his thirties goes out to find his only daughter after losing one of his eyes. Min Seung-ho, the Joseon dynasty's best swordsman chooses an ordinary simple life after perceiving the transient nature of power. Gurutai, the best swordsman in Qing dynasty aspires to become the best even in the Joseon dynasty.