Searxng/For All Mankind Season 5 TV Mars colonization faces new threats. Season 5 of For All Mankind premieres with shifting alliances, political intrigue, and an altered world. April 13, 2026 AceShowbiz - For All Mankind returns with its fifth season premiere titled "First Light," diving back into the complex and evolving saga of Mars colonization amid growing socio-political challenges both on the Red Planet and Earth. The episode opens with a dynamic catch-up montage, effectively setting the stage for this new chapter by outlining critical developments following the previous season.