As evidence for the defense at his ongoing trial, the Doctor presents an adventure from his future when he is travelling with a computer programmer named Mel. Answering a mysterious distress call from the space liner Hyperion III, they find that the passengers aboard include unscrupulous scientists, secret agents, saboteurs, thieves and a murderer. And lurking in the shadows are the Vervoids, the product of sinister botanical experiments, who will stop at nothing to destroy all non-plant life.
as The Doctor
as Mel Bush
as The Valeyard
as The Inquisitor
as Professor Sarah Lasky
as Commodore Travers
as Rudge
as Janet
as Doland
as Bruchner
as Grenville
as Kimber
as Edwardes
as Atza
as Ortezo
as First Guard
as Mutant / Ruth Baxter
as Duty Officer
as Second Guard
as First Vervoid
as Second Vervoid
