Take a giant terrorizing today's world, a ""short guy"" who (from a small plane) taunts him into building a precarious tower--and you have, with a mighty crash, one dead giant and one Grand Canyon. Also, of course, hero Sid set up for life with his reward. Newcomers Yorinks and Egielski are onto a satirical something in the Ungerer vein (see the city streets in smithereens, the world's leaders at a loss) and the switches in scale, the shifts 'in format are visually exciting--but the book has wit without humor, a somberness that extends from the sharply defined, gray-toned pictures to the world-view projected. No love, no warmth, no reason to save this ugly world at all.