While Mina is away for the weekend, a depressed Bunnicula turns invisible after eating a very dry, rotten yam.

Chester thinks Bunnicula is a robot made by aliens.

A prank war unfolds between Chester and Bunnicula.

When Patches decides to move in with Bunnicula and Harold, Chester knows that letting Mina's dad know about Patches' Were-Dude curse could be a problem.

Harold must teach Chester how to be a 'secret service' animal if they are to rescue Bunnicula from some chipmunks, who have trapped him in their tree.

A flooded basement means trouble for Bunnicula and the others when a Cellarmander eats them one by one. Together, Harold, Chester, Patches, and the Mumkey must rescue Bunnicula when he is eaten.

Bunnicula and the others traverse the sewers to retrieve Bunnicula's eye, but sewer mermaids won't make it easy.

Mina and Marsha search the city for Bunnicula, who is having a party, so Harold and Chester try to locate him before Mina does.

Bunnicula eats a mystical mandrake root and takes the size of a human.

Bunnicula helps a family of rabbits deal with a belligerent horse, who eats the rabbits of their carrots.

When Chester and the other Orlock apartment cats are trapped in a mysterious dimension by a human-hating ghost cat, Bunnicula and Harold must to rescue him.

Bunnicula's been framed for the crime of eating all the food in the fridge, so it's up to Chester and Harold to brush up on their detective skills and prove Bunnicula's innocence.

Harold wants to prove that he can be responsible when he takes Cerberus' place as gatekeeper of the underworld, but...it doesn't go too well.

Bunnicula accidentally erases Scott's memory after the latter finds out about Bunnicula's secret, but also becomes rather intelligent. Chester and Harold use this to take advantage of Scott and make him cater to their every whim, but this also makes Mina miss the old Scott.

A Government Agent searches Orlock Apartments for supernatural activity in order to save his job.

The pets find a magical locket that shows them the future, and they also learn that Mina will be in mortal danger when she becomes an adult. So, they decide to train her to be ready for any possible dangers to keep her safe.

The locket repairs itself and two ogres (John DiMaggio and Kevin Michael Richardson) decide to use it to capture Mina. Now, it's up to Bunnicula to save the future.