Perrault's fairy tale presented in claymation with choral voices. Bluebeard goes courting, all six of his wives having died. He arrives at the house of a widow with two daughters. He's greatly feared, but he overcomes objections with a generous dowry. One sister (Anne) refuses him; the other accepts. At his castle, the damsel delights in precious minutes away from Bluebeard in the rose garden. The Saracens declare war; Bluebeard goes off to fight them, leaving the keys to the castle in the damsel's hands. He warns her not to enter the forbidden room. As war rages, she discovers riches in the castle and then enters the forbidden room. Will Bluebeard discover her act? Can she escape death?

In mud flats along the coast of Brittany we watch acera, small ball-shaped mollusks that are about two inches in diameter. They rest in mud; then, in water, they dance, their skirt-like hood spreading like a dervish's cassock. They spin and spin. The film adds musical accompaniment. We watch them mate and secrete eggs: acera are both male and female, and can form chains with other acera in which they simultaneously mate as a male and as a female. The eggs hatch, and the cycle begins again.

An enthusiastic grandfather sits with children in a Parisian park talking about pigeons. First. their physical appearance—eye, wings and tail, and color—and their varieties. Then, he encourages the children to imitate their walk. He points out courtship and mating rituals, then provides an illustrated discussion of how they eat. This section is punctuated by a flock of pigeons fighting over a small, hard ball each wants to eat; the narrator's describes it as if it were a soccer match. He concludes with a discussion of pigeons taking off, landing, and flying; he uses slow motion and stop-time photography to show his audience.

We begin on planet Earth, with a demonstration of measuring distances using triangulation. Then, an imaginary voyage begins from earth to the moon, on to Mars, Saturn, the closest star (besides the sun), and beyond to the edge of our universe. The film depicts imagined landscapes, and it speculates on universes beyond ours. It ends with philosophical musings about the significance of Earth.

After a look at some strange creatures, the narrator and camera take us to the Chaco forest, on the borders of Paraguay, Argentina, and Brazil, where a vampire bat lives, desmodus rotondus, attacking wildlife and domesticated creatures, killing small ones by draining all their blood and killing large ones by leaving a parasite in their bloodstream. Four inches long, with a 12-inch wingspread, we see it walk, approach a victim, pull out a patch of fur large enough for it to engage its teeth, then lap six or seven ounces of blood. Its saliva may be an anesthetic keeping its victims from waking. A stub nose and harelip contribute to its efficiency and its hideous look.

Examines the sea horse, the only fish that swims upright. We watch it use its prehensile tail to wrap around plants and other sea horses. A frontal bulge houses organs including an air ballast. Three fins propel this fish. We see a female place her eggs in a male's pouch where they are fertilized and nurtured until birth in violent contractions. Inside the pouch are nurturing blood vessels. We then follow the growth of an embryo, greatly magnified: we examine its heart beating and its dorsal fin moving. Young sea horses attach themselves to each other. The film ends with images of many sea horses moving on the ocean floor, superimposed on a horse race.