Allison Simmons, who holds a doctorate in medicine, returns home and joins a prestigious hospital. During her rotation, she earns just $5,000 a month, leading her family to dismiss her education as worthless. Meanwhile, her older sister, Ella Simmons, is a top celebrity and the family’s precious cash cow. Allison accidentally discovers that Ella has leukemia and that she is Ella’s only compatible donor. She initially considers ending her pregnancy to save her sister, but her husband talks her out of it. Instead, Allison decides to test her family. At a celebration banquet, she claims that she is the one with leukemia and needs Ella to donate marrow. Her parents refuse, seeing Allison as an investment whose overseas education has yet to pay off, while also fearing that the procedure could jeopardize Ella’s career. Ella even swears that anyone who burdens the family deserves divine punishment before driving Allison out. Heartbroken, Allison leaves behind the test report bearing Ella’s name and returns to the Everetts. When the Simmons family finally learns that their beloved eldest daughter is the one who is dying, and that Allison, the daughter they cast out, is her only hope, their arrogance and favoritism lead to an irreversible tragedy. Allison rises to international prominence in medical research, while the Simmons family sinks into illness, regret, and ruin.
