Illustrations inspired in the short novel by chilean writer Hernán del Solar called “Mac The Unknown Germ". Mac is a germ that after his father death (The Patriarch), wants to infect all humanity with a terrible disease called “Laughing Pest”. From his quiet and safe home, Mac makes a journey of conquest along with other germs towards the World of Men. On his trip, he infects a small girl causing her the pest.

After many experiments, doctors try a vaccine with an anti germ called “Loc”. Mac and Loc had a hard combat, winning Loc. Mac totally defeated has to come back to his town...