• As the younger twin, Amaelia Morningstar thrives in chaos. Her sister, Addison, is a little more uptight. Rigid. Sticks to schedules and gets homework done before six PM. Their first few days at Midtown High School are great, until they're whisked away by two older students (who aren't really students at all). Pushed over Camp Half-Blood's protective border, they're met not with open arms, but with confusion. They've always been opposites, but they can't be that different. Can they?