Carmina is a teenager whose younger sister, Mariana, has a gift, though some might call it a curse. When miracles and other strange things begin happening with children, animals, and even the weather, Carmina's world is thrown upside down. No longer can she rely on math and science to save her. Carmina has to put aside her fears--both real and imagined, question her doubts about her family's beliefs, and take a leap into the unknown.

But as disaster looms and Carmina tries to protect Mariana from the inevitable, she finds she is at the mercy of forces beyond her control. It will...