Raised far away on the moon, Xingyin was unaware she was being hidden from the Celestial Emperor - who exiled her mother for stealing the elixir of immortality. But when her magic flares and reveals her, Xingyin is forced to flee her home, leaving her mother behind.

Alone, powerless, and afraid, Xingyin makes her way to the Celestial Kingdom, a land of wonder and secrets. In disguise, she trains alongside the Emperor's son, mastering archery and magic, despite the passion which flames between them.

Vowing to rescue her mother, Xingyin embarks on a quest, confronting legendary creatures and vicious enemies. But when forbidden magic threatens the kingdom, Xingyin must challenge the ruthless Emperor, leaving her torn between losing all she loves or plunging the realm into chaos...