In the vast Karoo of southern Africa, fossils unveil the epic tale of therapsids ancient ancestors of mammals. Divided into six families, these creatures adapted to shifting climates, extinctions, and geological upheavals. Through cutting-edge science and vivid reconstructions, the documentary traces their survival strategies and evolutionary traits. Only one lineage endures, giving rise to mammals and ultimately, to us. This journey into deep time reveals a forgotten chapter of our own story