Li Xiuer, the daughter of Yuxuan, was born after Yuxuan traveled to modern times. She is a cute girl who always loves to be imaginative and dreamy. In her dreams, she is always dressed in ancient costumes and traveling across the world with a sword. Yuxuan often teaches her daughter that it is a good thing for girls to have a heroic heart, but they must first learn their skills and do what they can. In the 21st century, in this technological age, having a wise mind is equivalent to the ancient hidden warrior possessing profound inner strength. However, after finishing the college entrance examination, Li Xiuer's world underwent a thrilling change because she traveled back to the time and space where her mother originally lived...