Exiled from heaven, and trapped on earth, Ala must atone for the sins of her past. Sentenced to serve as humanity's guardian, she is tasked to go after the treacherous demons that taunt them. Her ticket back to heaven is to capture Shen, the elusive phoenix, who also captured her heart. Locked in an eternal battle with a mist that corrupts souls, Shen is destined to die. Lost without his regenerative flame, the decay of his body and mind ushers the descent into hell. That is until he meets Ala, whose dragon blood is not only the cure to his illness but sets his soul on fire. When a series of demonic possessions coincides with a conspiracy in heaven, the fate of reality hangs in the balance. Bonded by their shared desire to help humans and spirits alike they form an unlikely duo to uncover the mystery. But dealing with corrupt angels, heavenly demons and humans who fall in between is never easy.