One day, Tsuyoshi Mukohda, an extremely ordinary salaryman, gets caught up in a hero summons being performed in another world. At the time of his summoning, he receives a unique skill known as "Online Grocery", that allows him to bring food ingredients and seasonings from his original world. Even though this skill seems plain at first glance, the food he brings into this new world has an absurd effect...!?

After the legendary wolf monster Fenrir got attracted to the delicious smell of Mukohda's food and signed the Familiar Contract with him, Mukohda decides to register with the Guild in Fallières his next stop.

After easily defeating the pack of dangerous yet powerful wyverns, Mukohda and his familiars receive praise not only from the guild, but also from the entire town. Unfazed by the attention, Mukohda goes out to look for a certain thing that he's always wanted to get in ever since he got summoned to this world.