The story takes place in a small city in the south. Luo Lan is a child born with blue blood, but the people in this city think that Luo Lan's arrival is an unlucky omen, so they ostracize her everywhere.
Luo Lan spent 17 years in loneliness. In Luo Lan's sophomore year of high school, transfer student Tong Tong changed Luo Lan's life. Tong Tong's secret was also revealed step by step.