Emma is a reincarnated woman who runs a fortune teller's shop in a different world, using her "fortune-telling," a cheat ability given to her by God. She receives a request from a lord to "find a suitable mate for his son, Vincent. With a hefty reward, Emma is eager to tell fortunes, but for some reason, she fails. Emma is depressed, as she had boasted of her hundred percent accuracy so far, but by chance she discovers that Vincent has a black birthmark on his arm.