The TARDIS brings the Doctor, Susan, Barbara, and Ian to the planet Skaro where they meet two indigenous races — the Daleks, malicious mutant creatures encased in armoured travel machines, and the Thals, beautiful humanoids with pacifist principles. They convince the Thals of the need to fight for their own survival.
| Directing | Christopher Barry | Director |
| Writing | Terry Nation | Writer |
| Production | Verity Lambert | Producer |
| Directing | Richard Martin | Director |
| Sound | Tristram Cary | Music |
| Writing | David Whitaker | Story Editor |
| Art | Raymond Cusick | Production Design |
| Art | Jeremy Davies | Production Design |
| Production | Mervyn Pinfield | Associate Producer |
| Costume & Make-Up | Daphne Dare | Costume Design |
| Sound | Jack Brummitt | Sound Supervisor |
| Production | Norman Stewart | Production Assistant |
