Shi Lianjia, an ordinary girl, has always liked An Qianlu, the school boy. But their usual relationship is indeed that of strangers. Once, Jiajia dreamed of a strange prophecy, but when she woke up, she found herself pointing at the law she liked and scolding him fiercely. Lu got to know Jiajia from that time, but because Lu's relatives forced Lu to marry Yoona, who was married to her fingertips, Lu used Jiajia's liking to refuse the marriage. Jiajia later gradually understood that Lu was not in love with her, and Lu had hurt herself again and again. By chance, Jiajia discovered that as long as she sucked her own blood, she would become a handsome boy like an angel. This is the other self in the legend. When the closed soul is released, as long as the owner falls in love with the closed soul, their positions will be swapped...