After the sudden deaths of her parents, the once-noble Lydia loses her fortune, is separated from her younger twin siblings, and is left burdened with enormous debt. Determined to reunite her family, she buys and rescues an abused amnesiac slave who once saved her life, naming him Leo. As Leo grows into a capable and handsome young man, he becomes Lydia's devoted protector. But when his lost memories return, their peaceful life is turned upside down, and his unwavering devotion to Lydia takes on a new meaning.