 Former rebel leader Roj Blake learns from outlawed protesters led by Bran Foster that he once led a resistance group against the evil intergalactic government The Federation, but he was brainwashed and his memories were erased when he was captured by The Federation. When Blake witnesses the protesters being slaughtered by Federation Guards, Blake is framed for a series of crimes he didn t do and is sentenced to exile on the prison planet Cygnus Alpha.