The film tells the story of the 17th year of Yuanwu in the Zhao Dynasty. The immortal master broke the 400-year tradition and was about to celebrate his 600th birthday. Because his voice overshadowed the emperor, the emperor was furious and wanted to eliminate him. Zhang Qian, the demon-suppressing officer, sent two troops, the bright and the dark, to Yuxu Mountain. The bright supervisor was responsible for gathering information, while the dark supervisor was responsible for assassinating the immortal master. The two teams had been at odds for a long time and had accumulated many conflicts. This time, there will be a fierce battle.