Left by all the nasty spirits. Fiona Fies and her family come from Underland – the land of witches, ghosts, and phantoms, where mischief, deceit, and hauntings are the order of the day! Their mission is to bring as much chaos as possible to the human world. They send poltergeists to haunt homes and are as mean as they can be. Additionally, they hate books, bathing, and especially: helpfulness. Only Fiona is different from the rest of the family. She enjoys reading and even has a human friend! When her uncle asks for her help, she must decide: Will she break with family honor and do good?.