In the far future, freedom fighter Roj Blake, framed by the all-powerful but corrupt Galactic Federation, escapes his captors from his sentence to a harsh penal colony and, helped by a handful of fellow convicts and armed with a superbly-equipped alien spaceship, sets about restoring freedom to the galaxy.
| Actor | Role |
|---|---|
 Gareth ThomasRoj Blake | Roj Blake |
 Sally KnyvetteJenna Stannis | Jenna Stannis |
 Paul DarrowKerr Avon | Kerr Avon |
 Jan ChappellCally | Cally |
 Michael KeatingVila Restal | Vila Restal |
 David JacksonOlag Gan | Olag Gan |
 Peter TuddenhamZen | Zen |
 Robert BeattyBran Foster | Bran Foster |
 Gillian BaileyRavella | Ravella |
| AAlan ButlerDal Richie | Dal Richie |
 Jeremy WilkinDev Tarrant | Dev Tarrant |
 Robert JamesVen Glynd | Ven Glynd |
| SSusan FieldAlta Morag | Alta Morag |
 Margaret JohnArbiter | Arbiter |
 Michael HalseyTel Varon | Tel Varon |
 Glyn OwenCommander Leylan | Commander Leylan |
 Leslie SchofieldSub-Commander Raiker | Sub-Commander Raiker |
 Brett ForrestKrell | Krell |
 Brian BlessedVargas | Vargas |
 David RyallSelman | Selman |
 Robert RussellLaran | Laran |