Wendy is an average, popular American teenager. All Wendy wanted was to be Homecoming Queen. Her life is quickly turned upside down after a visit from a young Buddhist monk Shen. Shen informed Wendy that she was not a normal teenager, she was in fact the reincarnation of an all-powerful Yin Warrior, the only person capable of defeating an evil spirit known as Yan-Lo, who attempts to conquer the world every ninety years. Shen begs Wendy to don a powerful amulet that will protect her from evil until he can train her in martial arts.