Lydia Evanshi was born into a prestigious marquis family, with wealth that would still overflow even if she spent it recklessly, and a charming face to match. There was only one thing she lacked: good judgment when it came to men. She fell in love with a prince born of a low-born mother, and for him, she gave everything—her heart, her soul, even her very being—helping him fulfill his dream of becoming emperor. The result? He ended up cheating on her with her distant relative, Giselle. Thus, Lydia decides to die alongside Giselle by drinking poison, determined to show them what true obsession looks like. But the plan fails, and Lydia is dragged to a harsh and desolate labor camp. Some time later, an epidemic strikes the cold, miserable camp. With her thin, pale hands trembling, Lydia quietly waits for death. Why did I go so crazy over that man? Why was I so stupid? If I could go back, I’d slap myself hard. Pull myself together. …And then, the opportunity truly comes: she returns to that exact afternoon when she had poured poison into Giselle’s teacup. Tea time. Smack! Lydia slaps herself right away and starts a new life. A life in which she will exact revenge on Richard—the man who abandoned her—on Giselle—the betrayer—and on Devon—the one who bargained with her life. To do that, she needs the help of the most coveted man in the Empire: Arsen Edis, the Empire’s sword. Lydia approaches Arsen, openly reveals that she has returned in time, and asks for his help. Arsen, half-believing and half-doubting, decides to watch over her for now and begins living with her. But… why does the look in Arsen’s eyes toward Lydia grow stranger and stranger?