Oh no! A terrible haunted dinosaur has mysteriously come to life and is wreaking havoc throughout Mysterious Valley! It's scattering bones and leaving destruction in its wake. Creepella steps up to the task of taming this creature - and brings Geronimo along for the adventure! Together, they set off on a crazy chase through the streets of the city. Can Creepella and Geronimo stop it?
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 Squesakspeare head to Horrorwood to search for the missing Blobbina. Will they ever find…
Muskrat City is under attck again. The sewer Rats have created a weather-changing device that unleashes huge storms, which will likely flood the entire city! The rodents of Muskrat City have one hope: the Heromice.
Timeless cheese stricks! Professor Maximilian Mousemover just arrived in Muskrat City ... in a time machine! Tony Sludge's great-great -grandfather Butch Sludge is visiting from the past, too, and he's up to no good. The Heromice must travel through time to save the rodents of the past - and the future - from the Sewer Rats.
The Thea Sisters and some friends decide to start a school newspaper. But when Colette's diary goes missing and sports reporter Nicky witnesses a suspicious finish during the Iron Mouse Games, the five mice have to put their reporting skills to work solving both mysteries. Can the Thea Sisters come up with the answer and make their deadlines for the paper, too?