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Gr 5–7—The town of White Rock has always lived in fear of the deadly gas known as "Bomb's Breath," but now it's up to Hope to find the one thing that may stop the danger for good...
Gr 4–7—A town called White Rock has survived World War III, though the bombs wiped out almost everything and the inhabitants are working hard to invent the things they used to take for granted...
Gr 5–7—In 2069, Earth is partially destroyed by the detonation of 27 green bombs that leave behind a pocket of dense oxygen molecules potent enough to kill any creature that inhales them...