Average librarian Ava Miller unexpectedly receives a legal letter from the powerful Sterling Group, informing her that she is the family’s long-lost heir. Upon arriving at the manor, she is met with hostility and scrutiny led by the cold CEO Julian Sterling. Convinced she is a fraud, Julian gives her one month to prove her bloodline and competence, or face expulsion. Equipped with an extraordinary memory and information skills honed from library work, Ava repeatedly saves the company from crises and earns people’s respect. She uncovers a hidden enemy plotting to seize family assets, a threat that has baffled Julian. During a bidding war, she sees through a trap, only to be falsely suspected as a mole by Julian, pushing their relationship to a breaking point. Heartbroken, she plans to leave. Before her departure, the elderly butler reveals the truth: Ava is the genuine heir. Julian confirmed her DNA long ago and tormented her on purpose to shield her from the deeply embedded traitor. Choosing to stay, Ava allies with Julian and exposes his treacherous uncle at the shareholder meeting. Julian confesses his love, and the two jointly take charge of the Sterling empire, embracing a new beginning.
