The Aldens are spending a week at the Dare to Dream Ranch, a rescue ranch that takes in horses whose owners can no longer care for them. The children help with chores, and Jessie is thrilled to be looking after a beautiful horse named Dragon. But when two of the oldest horses are missing from the pasture, a mystery begins to unfold—why would someone want to steal two old, sick horses? Then Dragon disappears, too, and the children discover that one of the horses has paint on its coat. Just what's going on at the ranch, anyway?