Rita Estelle knows that Duke Erwan Cereus will fall ill and die, leading to a bloody rebellion. She knows this because she would've died in that rebellion had it not been for a kindly sorceress who sent her back in time. With her second chance at life, Rita seeks to use her medical genius to get close to Duke Erwan as a child and cure him. But the closer she grows to him, the more she suspects his sickness is caused by foul play.