Satoshi, Eru and Mayaka plan to enter their next contest, the Cooking Contest, as part of their plan to advertise the Classic Literature Club. However, Mayaka is forced to finish advertisements for the Manga Research Society before she can go to the competition, forcing Eru and Satoshi to cover the first two parts of the competition. Satoshi does reasonably, and Eru does excellent, but Eru accidentally uses most of the allotted ingredients. When Mayaka arrives late to do her part of the competition, she finds that she does not have enough ingredients to make any dishes. However, Hotaro calls Satoshi over to give the team a bag of flour, which he received in a trade for an anthology sale. With the rules permitting outside ingredients to be brought in, this last ingredient allows Mayaka to cook a dish just in time. While Mayaka is cooking, however, she finds that the ladle at her station is missing. The members of the Cooking Society give her another one, but Eru later discovers that a note is left at the station, signifying that the mysterious thief has struck again.