While Coco sleeps far away, the sun creeps over a hill and skids across the water, touching a fisherman’s cap. It heads out over frozen forests, making shadows in a child’s footprints, and balances on an airplane’s wing for a little boy to see. The sun crosses cities and countrysides, wakes furry creatures, makes a desert rainbow, and barges into Coco’s room to follow her through a day of play.
Black Cat—black from the tips of his ears to the tip of his tail—only ever goes out in the day. But White Cat—white from her whiskers to her four furry paws—only ever goes out at night. He picks daisies, while she gazes at the stars. When they both feel the urge to explore a world beyond their own, Black Cat and White Cat go on a journey of discovery and meet for the very first time.
Bruno and Bert try to find out what happens to a special day after it is over.