The film begins with methodical descriptions of onedimensional twodimensional and threedimensional space It then looks at a twodimensional world inhabited by flat mice It imagines how a human from the third dimension could interact with that world It then suggests how beings from a fourth dimension might interact with us Next the film posits time as a fourth dimension with scenes to aid comprehension An offscreen narrator graphs and clever photography provide explanations and illustrations The film asks viewers to use their imaginations
