Thomas Jane as Josephus Miller; Steven Strait as Jim Holden; Martin Roach as Souther; Cas Anvar as Alex Kamal; Wes Chatham as Amos Burton; Dominique Tipper as Naomi Nagata; Shohreh Aghdashloo as Chrisjen Avasarala; David Strathairn as Klaes Ashford; Elizabeth Mitchell as Annushka 'Anna' Volovodov; Paulo Costanzo as Shed Garvy; Jared Harris as Anderson Dawes; Jay Hernandez as Dimitri Havelock; Shawn Doyle as Sadavir Errinwright; Terry Chen as Praxidike Meng; Chad Coleman as Fred Johnson
Two hundred years in the future, in a fully colonized solar system, police detective Josephus Miller is given the assignment to find a missing young woman, Julie Mao. Joining his task is James Holden, former first officer of an ice freighter who is involved in an incident caused by the tense relationship between Earth, Mars and the Belt. Far from their struggles in space, United Nations executive Chrisjen Avasarala works to prevent war between Earth and Mars. Soon the three find out that the missing woman is connected to a vast conspiracy that threatens all humanity.