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3 warriors from the Goryo Dynasty lead a riot. Due to the betrayal of Deok-Ki (Lee Byung-Hun), Poong-Chun (Bae Soo-Bin) dies. Deok-Ki then tries to persuade Seol-Rang (Jeon Do-Yeon) to join his side, but she refuses. She then flees with Poong-Chun's sword and his infant daughter.
18 years later, the female warrior is now blind and she trains the young woman (Kim Go-Eun) to use the sword for revenge. Meanwhile, Deok-Ki is the most powerful man in the country. Soon blood will be shed.
18 years later, the female warrior is now blind and she trains the young woman (Kim Go-Eun) to use the sword for revenge. Meanwhile, Deok-Ki is the most powerful man in the country. Soon blood will be shed.
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Time is A.D. 927, when Georan invaders have conquered the ancient Korean capital of Balhae and set up a new country, Dongran Guk. The leaders of Balhae desperately need a royal figure to reunite their nation. They find a prince, the previously exiled Dae Jeong Hyeon, who's hiding out under the name So Sam.
The leaders dispatch a peerless swordswoman, Yeon So Ha, to protect So Sam before Georan's Killer Blade Army, commanded by Gun Hwa Pyeong, find him first. Initially, he sends his deputy, Mae Yeong Ok, to handle the situation: She wants to become the greatest swordswoman of the age and knows she must first kill Yeon.
The leaders dispatch a peerless swordswoman, Yeon So Ha, to protect So Sam before Georan's Killer Blade Army, commanded by Gun Hwa Pyeong, find him first. Initially, he sends his deputy, Mae Yeong Ok, to handle the situation: She wants to become the greatest swordswoman of the age and knows she must first kill Yeon.
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