Kai Song dreams of being a warrior. She wants to follow in the footsteps of her beloved father, the commander of the Royal Legion. But she is plagued by rumors that she is the granddaughter of Gumiho, the infamous nine-tailed fox demon who was killed by her father years before. Everything comes crashing down the day Kai learns the deadly secret about her mother's past. Now she must come to terms with the truth about her identity and take her destiny...