For young David Valdes Greenwood, the indomitable "little fruitcake" at the center of these tales, nothing is sweeter than the promise of the holidays. A modern-day Tiny Tim, he holds fast to his ideal of what Christmas should be, despite the huge odds against him: Sub-zero Maine winters. A host of eccentric relatives. And his constant foil: a frugal, God-fearing Grammy who seems determined to bring an end to all his fun.