In 1930, a military train with headless ice sculptures appears in Fengtian, uncovering the Yinglong Dragon mystery at Changbai Mountain's Heaven Lake. Bureau 749 deploys to the peaks. Shawn, a Mountain Guardian with an Abyssal Guard bloodline curse, tries to suppress a beast about to break its seal. A mysterious black-robed figure arrives, proposing Shawn descend into Heaven Lake to slay the last Yinglong Dragon. A dragon-hunting mission for humankind's survival begins!
