The life of a luna moth is one of nature's short stories. Even barring mishap, its span is so brief that it doesn't even have time to eat. And its biography may be shortened even further by a bat, an owl, or a boy making an insect collection. This male, hastening to reply to an invitation - sent by scent - from a female, encounters a largemouth bass. But the fish has problems, too. The river it calls home is badly polluted and the boy, tiring of trapping insects, is going fishing.