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.

Yuuki and Kokkoro visit a restaurant where an eating contest is being held. There they encounter Pecorine, the peckish swordswoman they met on their previous quest, who out-eats the competition to be crowned the winner. When the pair set out with Pecorine to help her search for her missing sword, they come across a cat-eared sorceress named Karyl.

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.

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.

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.