Men with Sword Episode 1

Okay, This may start off a little confusing

I do not know about other, but when I watched the first episode I am really confused. The story will start off sad, and I hope that when I'm done with this drama, it has a happy ending. You must pay attention to every details of this series if you wanna learn new things lol. I dont know but I learnt alot of this when I watch historical chinese drama when I watched Untamed and WOH, and etc. So this is new to me, plus I just found this on dramacool, but it was pretty boring to me in the first episode, and a bit confusing.