Plot: A young blacksmith Lü Sansi comes across a swordsman Baili Wuyou who he admires very much, and helps Bali Wuyou escort He Qingying, a running dog for the Western Depot. But He Qingying tells him another version of the story. She is actually persecuted by the Western Depot and Baili Wuyou is their running dog. It's getting more and more suspicious and Lü Sansi has to make a judgment. He Qingying might not be the running dog and Baili Wuyou might be. It's hard to tell the truth. Lü Sansi finds that it's completely different from what he expected.