Zhang Chen'an, Qingchuan County's brilliant strategist who has solved countless cases, meets Ling Shuang, the young heir to the Snow-Treading Sword who has just entered the martial world. One grew up on the streets and knows how complicated human nature can be; the other is innocent and naive, unaware of the world's dangers. A locked-room murder case binds their fates together.
"Ling Shuang, kill me! If you kill me, it won't hurt so much!"
"Zhang Chen'an, you think I wouldn't dare..."
The sharp sword pierces his heart. It's only an external wound, yet the pain inside is worse.
