Su Nian, a blind girl, is treated as a disposable pawn by the Su family and thrown into the deadliest battle camp on the frontier, where her life hangs by a thread. Just as she is about to give up hope, Huo Zhan, the camp's commander, returns from a bloody battle. Seeing that a blind girl has been sent to his camp, he angrily orders her thrown out. At the brink of death, Su Nian grabs Huo Zhan's hundred-jin horse-cleaving saber and claims she can repair the mechanism in its hilt. Calm and composed, she quickly fixes it. Huo Zhan tests the weapon and discovers that the mechanism fits together perfectly. Shocked and intrigued, he declares on the spot that Su Nian belongs to him. From then on, Huo Zhan protects Su Nian in the battle camp, and a romance that crosses boundaries of status and prejudice begins.