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.

Cast:Colin Baker, Bonnie Langford, Michael Jayston, Lynda Bellingham, Honor Blackman, Michael Craig,

Genre:Drama, Science Fiction, Adventure,

country:United Kingdom,

Production:BBC,