Luo Changge grew up in the Feixue organization, but was never seriously trained as a killer. From the first day she was brought to Feixuetang, she was arranged to take care of Luo Xiang, who was confined to a wheelchair. As Luo Changge grew up, her beauty and talent gradually attracted the attention of people around her. Her senior brother Luo Zitan began to secretly teach her martial arts until one day she was discovered by Luo Ren, Luo Zitan's master. Luo Ren wanted to destroy Luo Changge's martial arts, but Luo Xiang stopped him, so Luo Changge was kicked out of Feixue and began to wander the world alone. By chance, she heard the legend about the Beiming family. Legend has it that the Bihan Sword has reappeared in the world, and whoever gets it will win the world. Not only the martial arts sects began to search for it, but even the current princes and princes began to compete for the Bihan Sword. By chance, Luo Changge was discovered by the adviser of Jin Wang Nangong Fei, who pointed out that she was most likely a descendant of the Beiming family who had disappeared for many years. So Luo Changge was brought back to Prince Jin's Mansion by the King of Jin. Spending time with Nangong Fei in Prince Jin's Mansion gradually made Luo Changge forget the agreement she had made with her senior brother to travel around the world. However, she did not know that her destiny was never as simple as she imagined. Between conspiracy and interests, true love was getting farther and farther away from her...