Valerian and Laureline, no longer members of any organisation, are down to doing space deliveries. With Galaxity gone and money getting scarce, their aging spaceship is becoming a hazard, which is pushing Valerian into accepting questionable cargo. After a somewhat rough landing, our two ex-agents, on their way to deliver their goods, meet some individuals with very surprising gifts who claim to be itinerant artists. But is that really all they are?