The Count's second daughter, Sylvia, treasures the hand-me-downs her tiresome older sister Isabella discarded. One day, her older sister says that even her fiancé is bored. She says, "She's tired of the Margrave's face, and she doesn't like living in the countryside." Silvia becomes the fiancée of the young Margrave Fernando in place of her sister. She said she didn't like her older sister, but Fernando-sama is nice, and the Margrave territory has a lot of greenery and is very beautiful. It's the best if you can spend a relaxing time in a place like this! Sylvia, who used her regeneration magic to fix the things her sister had thrown away, saved the owner of the mountain, and began to be admired as the "Saint of the Frontier." Just then, Isabella cries, "Her sister stole her fiancée," and an angry prince comes...!?