In the world of Aldebaran, readers live through the most fantastic sagas. Author Leo recounts humanity's first attempts to colonise distant planets. Kim and his companions will come across strange creatures and face the dangers of unknown worlds on their travels. They will witness the destruction caused by mankind's madness. In the first album, Kim meets Mark, another teenager who has survived the annihilation of their village. Together, they set out to look for an explanation for this terrible catastrophe.