Yamano Mitsuha is 18 years old when she is suddenly left with no family. It is then that she accidentally falls off a cliff to her certain death... only to wake up in a strange new world!

Mitsuha finally arrives at the estate of Count Bozes, only to be turned away at the gate. Now she must find a way to enter the manor, so that she can assume the role of foreign noblewoman, Mitsuha von Yamano!

With the support of Count Bozes, Mitsuha secures the funds to open a general store in the royal capital. Stocked with goods from Japan, Mitsuha's ready to rake it in! If she can make her first sale, that is...

After a visit from the head chef of the Viscount Reiner's family, Mitsuha ends up in charge of the debutante ball for Adelaide, the viscount's daughter. Can she manage to throw a dinner party that's out of this world?

With the debutante ball a success, Mitsuha's eager to get back to running the shop. However, it seems the Bozes family has different plans! And there's something that's been troubling their daughter, Beatrice...

After a run-in with a fugitive, Mitsuha approaches the mercenaries who saved her with a curious proposal: allow her to tag along on one of their adventures. Her goal? To perform market research, of course!

An adorable and elegant blonde girl by the name of Sabine visits the shop. Mitsuha manages to save Sabine from being kidnapped by a ruffian, but as it turns out, there's more to Sabine than meets the eye...

Mitsuha is visited by Alina, whose family runs a restaurant on the verge of being taken over. With trouble brewing in paradise, it's up to Mitsuha to use every trick up her sleeve to save this mom-and-pop business!

Mitsuha is hatching a new money-making scheme when news arrives that the kingdom is under attack! As the invading army closes in on the capital, Mitsuha finds herself at the palace, faced with a decision...

Mitsuha and the captain successfully repel a horde of goblins, thanks to a stroke of ingenuity. Now it's up to Mitsuha to rouse the mercenaries of Wolf's Fang to action, so they can confront the Empire's army!

The Great Ancestral Dragon appears to reinforce the Empire, but Mitsuha will stop at nothing to protect her kingdom!