The Spooky Quadruplets are a pair of identical 10-year-old quadruplet sisters who enjoy being scary. Their names are Stella, Olivia, Mira and Vera. They all live in a haunted house together. All of them always wear costumes that cover their whole bodies, including their faces. Each of them has a different personality, and they share their house with 9 very spooky female animals that can speak fluent English.