Our two former agents, now idle, create their own adventures by helping their fellow beings, and resume their quest to find Earth. With volumes 16 to 18 collected here, we find Valerian and Laureline suddenly rich beyond their wildest dreams, and this new situation brings the differences in their personalities in stark contrast: where Laureline remains true to herself and her love of life, Valerian finds himself idle and disoriented. Fortunately, when the former is kidnapped, the son of Galaxity earns back his status as a hero and savior. Then, the united couple faces adversity and the hardships of parenthood (even temporary) together. Finally, they're back on the trail of the vanished future Earth, paving the way for the last cycle and the saga's conclusion.