In Guilly Susie, a cache of cockroaches observe unspeakable abuses from the shadows, mute witnesses to suddenly orphaned Susie and Tony Deveraux's chaotic new existence. The grief stricken sister and brother move in with their closest relatives - lecherous Uncle Henry and slovenly Aunt Melinda - only to find that they were taken in, not out of familial love, but greed. An insane greed that inevitably leads to further death and irreparable devastation. In the end, the molted cockroach husks wither in the wildfire that razes everything, even Susie's own sanity, to blackened cinder.