A young man named Yuuki awakens in an unknown world with no memory of his past. Together with his self-proclaimed guide, Kokkoro, the pair set forth into the beautiful land of Astraea. After arriving in the royal capital of Landosol, they visit the Guild Association in search of work to pay for their lodging and embark on a mushroom-hunting quest.

Pecorine wanders the streets of Landosol, snacking on tasty treats as she goes. Meanwhile, a starving Yuuki, Kokkoro, and Karyl arrive at a restaurant and attempt to place an order, but Pecorine has already devoured the establishment's entire stock of food. However, it just so happens the restaurant has a forbidden secret menu!

Pecorine and Karyl, together with the Gourmet Guild's founders, Kokkoro and Yuuki, are able to secure a base of operations called a "guildhouse" from the Guild Association. Thrilled to begin their guild activities, they arrive at their new guildhouse only to find that it has been left abandoned for many years. Undeterred, the group sets to work tidying up.

After successfully adapting to life in the guildhouse, Yuuki comes down with a terrible cold. Despite Kokkoro, Karyl, and Pecorine's best efforts to nurse him back to health, his condition refuses to improve - in fact, it gets even worse. With no other option, they take Yuuki to a nearby clinic, only to have a shocking experience.

At the request of the Guild Association, Yuuki and his guildmates set out on a quest to harvest spices. Pecorine is elated that the Gourmet Guild is finally launching its official guild activities, but they arrive at their destination, Targum Village, to discover a strange phenomenon is occurring there -- villagers are going missing due to mysterious beings called "Shadows" appearing in the area.

The members of the guild Elizabeth Park encounter a Shadow within the forest near Targum Village. During the ensuing battle, one of the members, Shiori, is swallowed by the beast. Upon learning about the situation from Shiori's older sister, Hatsune, and the other members, the Gourmet Guild joins forces with Elizabeth Park to fight the Shadow and save Shiori.

The Gourmet Guild pays a visit to the Guild Association to pick up a new quest. While glancing through a variety of flyers, they come across one that seems a bit odd. It turns out to be an unofficial request posted by the three young members of the guild Little Lyrical, and the Gourmet Guild decides to accept.

Kokkoro wins a raffle at the shopping district, and the Gourmet Guild sets out to enjoy the grand prize - a trip to a beach resort. Upon arriving, they reunite with Saren and Suzume of Sarendia Orphanage who are working at a snack hut on the beach. Karyl worries over the fact that the snack hut is deserted despite it being lunchtime, but it turns out there's a reason...

Yuuki and Kokkoro visit their familiar haunt, the Cockatrice's Nest, to drop off a souvenir. However, they arrive to find the owner frantically making pudding, as though he's been possessed. Just then, a diviner named Shinobu arrives on the scene.

Pecorine begins to worry about Karyl, who's late emerging from her room one morning. Believing that something must have happened, Pecorine bursts into the room and ends up beating up Karyl's treasured plush toy. Kokkoro offers to use her sewing skills to mend it, but they're unable to find cloth for the repairs and decide to make a shopping trip into town.

Karyl is upset that their delicious-looking breakfast spread doesn't include bread for some reason. Apparently a powerful monster has settled down on the road connecting the farm village to the city, disrupting the flow of numerous goods. Upon seeing the troubled faces of the people in the marketplace, the Gourmet Guild takes on a dangerous monster-hunting quest to defeat it.

With the help of Labyrista, the Gourmet Guild members are able to avoid the mighty Shadow X's attacks and escape to a temporary version of the Landosol royal palace, created with her ability. Kokkoro is shocked to see a portrait of Pecorine hanging in the palace. Wearing a solemn expression, Pecorine reveals a big secret that she had been hiding all along.