Crazy Jack — Donna Jo Napoli

Once there was a boy named Jack who traded away a cow for a handful of beans. But Jack was no fool, he was haunted since the day his father climbed up into the clouds and vanished. When the beans provide a way for Jack to pursue his father, he enters the Giant's world, where he discovers the terrifying ends of greed and desire. In Donna Jo Napoli's transforming novel, Jack's search for his father yields not gold, but sustenance, love, and the means to build a life.