Badger and Rat are busy organising the harvest festival, and Mole is unaccountably absent. A concerned Rat calls round to find him seriously ill in bed. Badger suspects mushroom poisoning and organises a search for ingredients to make up an antidote, enlisting the help of riverbankers and weasels alike. One elusive but vital ingredient (a rare fungus) is causing them the most worry, and with time running out for Mole, they just need to look in the right place.
