Boom Broom thinks his life can't get any worse. Ever since his mother was swept away by a twister, his father has been locked in the attic, leaving twelve-year old Boom to care for his little sister Mertyle. Low on money, Boom brings home a feisty, seaweed-covered fish from the reject seafood bucket by the docks. But when the seaweed parts, Boom and Mertyle find that their supper is actually a …