After the death of her family, Adriana Eren Toscaria was betrayed by her countrymen and killed when the Keiltz Empire invaded her lands. In her last moments, she prayed to never be reborn, only to wake up eight years before her tragedy began. In order to uncover the cause of House Toscaria's ruin and save her loved ones, Adriana begins working at her family's bank, disguised as an apprentice banker. Now, the question is whether this inexperienced noble lady will succeed before she gets caught!