A bat tells his story. He lives near a Mayan temple in a cave with bats of nine different pitches. His mother cares for him, teaching him to echo for worms. But all is not idyllic: his brother dies learning to fly; not everyone gets along (babies can be attacked by bats of other pitches). After three years, his sexual urge materializes, and he mates with many females. God speak...$性教育$Experimental animation