In order to save the sword master Rong Zhao, Jiu Yuan, a disciple of the Fallen Immortal, secretly practiced forbidden magic in the demon world and became a half-demon. However, when his bones were cut out and tortured, his master discovered that the heart-protecting scales were full of forbidden emotions. The thousand-year-old master and apprentice were thrown into a deadlock of killing their master to prove the Tao and defying heaven to save their lives. When Rong Zhao's sword penetrated her demon-marked heart on the Immortal Execution Platform, Jiuyuan smiled and crushed the blood jade: "You gouge out my immortal bones, and I break your Tao heart, so that we can be clear." This gamble of tempering the sword with demonic blood and using the sword bone as a contract finally tore the way of heaven apart at the moment when the divine and demonic patterns appeared. The once supreme sword master knelt in the blood pool holding broken scales in his hands: "Yuan'er, are you willing to fall into the endless world with me at this moment?"
