Bisco and Jabi continue their journey through Touhoku in search of Sabikui, the Rust-Eater, a mushroom said to cleanse away any rust. Milo also realizes that if he could cure his sister, Pawoo, if he had this Rust-Eater. Meanwhile, the governor of Imihama, Kurokawa, burns with an unusual obsession with killing Bisco.
It's the way of the Mushroom Keepers
to repay their debts of gratitude.
إنّها الطريقة التي يستطيع رُعاة الفطور
من خلالها ردّ المعروف
Ein Pilzhüter muss seine Schulden
bei Wohltätern immer begleichen.
Los Protectores de Hongos
siempre devuelven los favores.
Los Protectores de Hongos
siempre devuelven los favores.
Les gardiens paient toujours
leurs dettes.
Ripagare i propri debiti è dovere
 di tutti i Custodi di Funghi.
É costume de um Guardião de 
Cogumelos retribuir a ajuda.
У грибных стражей положено
всегда возвращать долг.