Maria is a sweet country girl who ventures to Tokyo to honor a favor for her late grandmother. Waiting for her at her destination - the Rosy Convenience Store in Misakigaoka - are the Tomekichi brothers, struggling with an increasingly senile grandfather, a clueless father, and a family business on the verge of bankruptcy. All seems hopeless, until one day Maria turns up on their doorstep - to the dismay of one brother in particular. To complicate matters, there are moody customers, ever-present food issues, and a shady inspector ready to strike at any moment.

Will Maria be able to save this little convenience store? Or is it doomed to fold?