"The Magic Gem" is a much-loved Korean folk tale that tells the story of why cats and dogs don't get along. A poor fisherman wins a fabulous magic gem that grants his every wish before it's lost to a conniving neighbor. His cat and dog manage to recover the gem, but on the way home the dog loses it in the river. The clever cat gets it back and becomes the favored house pet, while the jealous dog gets nothing, which is why dogs and cats don't get along.