Si Qi is a Han girl from the ethnic minority who lives in the ancient mountains. She was fostered in a family since she was a child. She also has an older brother, but it is said that Si Yu has never seen her. One day, she went up the mountain to pick food and saw an extremely tall "strange egg". She liked it very much. After carrying the "strange egg" back to the village, it triggered a series of incomparable adventures and experiences...