Explains bioluminescence and profiles some of the bioluminescent animals and living things around the world, from the firefly and anglerfish to foxfire mushrooms and the vampire squid.
Malcolm, a smaller than average rat, loves life at McKenna School and the secret society of classroom pets that keep children out of trouble, but when Aggy the iguana disappears Malcolm must use all of his ratty persistence to prove his innocence and save her.