A community of Underground cats plays an important role in Francis's childhood.
After the loss of his family, Francis is welcomed by this community and lives with them for some time.
These cats are peaceful and reside into a underground cave linked with tunnels to surface (one of them leads to an abandoned well). They collects large number of books and each cat of the community develops a passion for literature and culture, curiously they also consume a particular grass growing inside the caves that's infact a psychoactive drug but without heavy effects.
The entire community is wiped out by a mysterious mass murdering. Madam (the first ever mate of Francis) is killed alongside all the other cats, with the exclusion of Francis. For years, Eloi is believed to have been one of the victims.