Johnny goes on a trip to the museum and brings the things to life, including a mummy.

Johnny uses one of his sisters' inventions to bring two cartoon characters to the real world in order to scare Sissy out of the house, but the characters mistake Porkbelly for a zombie world and try to destroy it.

Johnny accidentally turns his sisters into vampires, and has to save Gil from getting bitten by his lovestruck vampire sisters and change them back.