Because of her mother Jiang Mei's painful past, Lin Xiao joins the International Rescue Center to save lives. When Lin Xiao arrives at Pawnshop No. 9, its owner, Cheng Nuo, takes an interest in her pure soul and grants her seven days to return home. However, Zhang Xi, Jiang Mei's adopted daughter, grows jealous and frames Lin Xiao, driving a wedge between Lin Xiao and Jiang Mei. In the end, Lin Xiao passes away, and by the time Jiang Mei learns of her death, all that remains is endless regret.