When wolf cubs Donald and Dora, then other villagers, succumb to a strange fever, the brave fox Penhaligon Brush sets out to find a cure, which includes an ingredient found only on the deserted Howling Island.
When Penhaligon Brush the fox is summoned by his step-brother to the seaside town of Porthleven, he finds immediately upon arrival that his brother is incarcerated in the dungeon at Ferball Manor.
