As a child, Jiang Yuebai was kidnapped while protecting her brother Jiang Zixing, resulting in memory loss and deafness. Adopted by waste collector Gu Er and renamed Gu Lan, she lived in poverty for 18 years. Upon encountering Jiang Zixing, now a wealthy heir, he mistreats her—slapping her and forcing her to pick up trash. When Zixing is injured in a conflict, their mother Gao Yalan forcibly drains Gu Lan’s blood to save him, nearly killing her. Only when Gu Er reveals her origin with an old photo does the family realize Gu Lan is their lost daughter. But Yalan hides the truth, leaving Zixing unaware he abused his own sister.