Actually a co-production of New York Review Comics and London's Breakdown Press – whose co-director, Tom Oldham provides both an afterword and interview with Pleyers – The Children of Light is herein collected into a single volume and – at last! – translated into English, by Luke Burns. 

The Children of Light was originally published in France during the early 1980s as Les Êtres de Lumière.  It is filled with page after page of detailed Euro-style comics art presenting classic, old school science fiction tropes that are weaved together in a highly complex plot that is part space opera part political sociology.  This edition is a full-size, full color, softcover volume runs just over 100 pages including extras.

If there is one creator whose opinion (of a work in this vein) is worth listening to is Moebius.  Here's what he had to say in a personal communication to Pleyers:

"I was deeply struck by your book for many reasons, of course for its intrinsic qualities of strangeness, almost of madness – how should I put it? – reasonable madness, the madness of one who acts without regard for convention, but who, with confidence, takes their self-expression to the limits, and sows their seed, without knowing if it wil blosssom."