One day, Chitose wakes up to find she has possessed Claire, the villainess of a novel known as the "most terrifying wicked woman in history"! Claire was forced to marry Duke Vermilion, the "Reaper of the Battlefield," and is ultimately destined to be executed in the end...

Bewildered by this dire situation, Chitose is suddenly faced with three adorable children. As someone who loves kids and dreamed of becoming a preschool teacher, Chitose is overjoyed by these children who never appeared in the original novel. However, the kids are completely terrified of Claire.

To make matters worse, her husband, Duke Vermilion, returns from the battlefield indifferent not only to Claire, but to the children as well...

Will Chitose be able to rebuild this completely broken, freezing-cold family?!