The Shadowless Sword is actually one of my favourite Korean sword movies. It has a simple plot but is pretty entertaining. Evil forces have killed off the royal bloodline and there's one exiled prince left who can take the throne. The good guys send a lone warrior to fetch him back to the capital to become the King. The bad guys send a group to stop that from happening. The exiled prince doesn't want to become the King. That's the crux of the story. I really like Yoon So Yi as the main female lead of Yeon So Ha. She is a pretty girl and a bad ass. Is very loyal and has high morals. She really made the series worth watching. I loved the fight scenes that she was involved with. Most Korean sword films have very good cinematography which makes it feel like you're watching a live art show.