The British science fiction television series Blake's 7 first premiered on BBC One.
The original run of Blake's 7 concluded after four series on BBC One.
The second series of Blake's 7 was broadcast, continuing the story with new characters and developments.
The third series of Blake's 7 aired, introducing new cast members and storylines.
The fourth and final series of Blake's 7 was broadcast, concluding the series.
Roj Blake leads the initial rebellion against the Terran Federation's oppression before his capture.
Blake is captured by the Federation and sentenced to a prison planet, marking the start of his imprisonment.
The Federation intelligence officer, Kerr Avon, frees Blake from the prison planet to use him for a covert mission.
Blake and allies take control of the Scorpio, a powerful alien spacecraft, to use against the Federation.
Using the Scorpio, Blake begins active resistance operations against the Federation's rule.
Vila Restal, a skilled thief, joins Blake's crew on board the Scorpio.
Cally, an alien telepath from the planet Auron, becomes part of Blake's team.
The crew discovers and captures the Liberator, an advanced alien ship better suited against the Federation.
Blake mysteriously disappears, and the crew is forced to continue their mission without him.
Avon assumes leadership of the crew after Blake's disappearance and reorganizes the team.
Del Tarrant joins the crew as a pilot, strengthening the Liberator's operation efficiency.
Servalan takes control as the ruthless President of the Terran Federation, becoming the primary antagonist.
The Liberator is destroyed in a Federation attack, forcing the crew into new plans.
The crew captures a new Scorpio to replace the destroyed Liberator.
Cally is killed during an incident on the Scorpio, deeply affecting the crew.
Soolin, a skilled gunfighter, joins the crew after Cally's death.
The crew engages in a decisive conflict with the Federation forces.
The Scorpio is destroyed, and most of the crew are believed killed in the aftermath.
