When twelve-year-old Hannah has a vision of the end of the world, she knows exactly what she needs to do to save the world, at least most of the children of the world. The only problem is she has to convince not only her parents and the others that are needed to help.

Moving to a secluded area of Idaho makes her sister extremely unhappy, causing distress in her family.

Is it really possible for Hannah to save the world? Or is she disappointing an entire community she has formed?