On an asteroid far away in the middle of nowhere, Valerian and Laureline have become struggling salespeople, more interested in getting news about their disappeared Earth than about boosting their profits. They hear about an expedition that's soon to depart on an exploration of the Great Void, the unknown territory right on the edge of the universe. Needless to say, they sign up in a heartbeat!

Vivaxis, a consortium of machinations as lucrative as they are clandestine, attracts many a powerful person into its fold. A mysterious former archangel seems to be plotting to take control of the conglomerate... At the heart of this celestial drama, Valerian and Laureline are trying desperately to reset the clocks of space-time.