Original Webtoon Friday the 13th - Devil's Day, considered the most unlucky day of all. Born on this day, Lilia Iluk became a maid for the Viscount's household, hiding her birthdate, and married the head of the household after dating him for 10 years. However, her trusted husband revealed that she was born on Devil's Day and was a "Messenger of the Devil," and got executed... She hates both her husband who sold her, and the world that looks down on and rejects people who just so happened to be born on Devil's Day. As she is burned at the stake, Lilia's heart fills with hatred. With her life on the verge of ending, Lilia negotiates with the Devil and is granted her wish to start her life over on the condition that she offer her soul on the next Devil's Day. Will Lilia's revenge be successful?