Mia, who was treated poorly within the mansion after a politically arranged marriage, has a dream in which she switches places with her cruel husband, Will. After experiencing a day in her husband's life in the dream, she wakes up to find that the situation in the mansion has changed...?! What on earth happened?! Was it a dream? Or was it reality...? A chaotic and doting romantic comedy about a husband feared as a demon on the battlefield and his beautiful, talented, and angelic wife, filled with misunderstandings and body swaps!