When Ye Beixing woke up, she found that her natal sword spirit Mingxue was actually in love with her master Jun Qingyan's natal sword spirit Mo Ci. She immediately objected sternly, noting the disparity in family status and fearing that her master would be angry with the sword spirit. Jun Qingyan was a glorious Mahayana sword master. He doted on Ye Beixing, who was weak and had a broken sword vein, and raised her with great care from an early age. The love between the sword spirits unexpectedly led to the bond between the two of their past lives - they were twin sword spirits born in the sword tomb. They were together in the past life, and Ye Beixing was reincarnated by the sword to protect the king. This fate of connecting swords and spirits finally allowed the master and apprentice, who had a crush on each other, to reveal their feelings for each other and stay together for a lifetime.