Through journal entries sixteen-year-old Miranda describes her family's struggle to survive after a meteor hits the moon, causing worldwide tsunamis, earthquakes, and volcanic eruptions.

There were warning signs that the molasses tank would break. The steel sides moaned and groaned. Molasses oozed from its seams. But the people of Boston's North End -- mostly poor immigrants -- were powerless to complain to the big molasses company. On a bright January day in 1919, the tank finally broke and almost three million gallons of molasses rushed the neighborhood.

Henry Long doesn't have a heart. He doesn't go to school. He doesn't have a girlfriend. He doesn't have a clue. Two of those things are about to change. Since the Tragedies, Henry Long doesn't have much: just an annoying low-watt buzz from his makeshift heart transplant, skinny arms, and a dusty library attic, from which he charts the reconstruction of the Green Zone, the last habitable neighborhood of his ruined coastal city. While his parents work...