"Something is wrong with Gorgo, the monster in the moat of Cacklefur Castle! Creepella discovers that he is lovesick for the monster Blobbina, who also happens to be a famous movie star. But when Creepella delivers Blobbina a love letter from Gorgo, she finds out Blobbina has disappeared! Creepella and Billy Squeakspeare head to Horrorwood to search for the missing Blobbina. Will they ever find her?"

When Geronimo's sister, Thea, discovers an old, mysterious map showing a secret treasure hidden on a faraway island, the gang of the "Rodent's gazette" is dragged into a treasure hunt.