When Thea was just an infant she was stolen by an evil professor, Fendrel Terrowin he also stole three others, Rose, Seraphina and Winfred. He altered them as babies so they could change into an animal, and he changed Thea so she could become a horse, a white Gypsy Vanner. Terrowin's plan was to train them to obey his commands and take over the world, but the four girls escaped when they were five, Terrowin tried to stop them with gas, the toddlers still escaped but lost their memory of him or each other. Now they live separate lives, here is the account of Thea, the horse Changer.