In the 26th century, the Doctor and Jo uncover a plot by the Master to provoke an interplanetary war between Earth and Draconia.
| Directing | David Maloney | Director |
| Directing | Paul Bernard | Director |
| Writing | Malcolm Hulke | Writer |
| Editing | John Bush | Editor |
| Lighting | Ralph Walton | Lighting Director |
| Costume & Make-Up | Barbara Kidd | Costume Design |
| Sound | Dudley Simpson | Original Music Composer |
| Camera | John Tiley | Camera Operator |
| Production | Nicholas John | Production Assistant |
| Crew | Dick Mills | Special Sound Effects |
| Art | Cynthia Kljuco | Production Design |
| Costume & Make-Up | Sandra Shepherd | Makeup Artist |
| Production | Barry Letts | Producer |
| Writing | Terrance Dicks | Script Editor |
| Sound | Brian Hiles | Sound |
| Visual Effects | Bernard Wilkie | Visual Effects Designer |
| Visual Effects | Rhys Jones | Visual Effects Designer |
