After her parents' business went bankrupt, they accidentally became separated from the female lead and her younger brother during their escape from creditors. Later, the female lead suffered amnesia after a car accident while being adopted by her foster father, while her brother was found by their parents and brought back home. For years, the family never gave up searching for the female lead. However, when she finally appeared as the "blood bank" for her brother, they repeatedly mistook her for someone else and mistreated her. It wasn't until her blood was completely drained, almost leading to her death, that she barely survived and discovered the truth: her biological father was someone else, and the separation of the siblings wasn't a coincidence but a carefully orchestrated conspiracy.