On Jar Island, there are no worries. Mothers do not lock their doors at night, knowing their daughters are safe in their beds. However, bad things do happen to good girls: like Lillia last summer, who will not let the same thing happen to her little sister; Kat has been called a freak long enough, and plans revenge on her one-time best friend; and Mary, who left Jar Island because of a boy, and now has returned, with revenge in her heart. Together these three girls make a pact so they can all achieve their revenge.