The one with a space hick.
The TARDIS lands on a space beacon just before it is attacked by the titular Space Pirates. They blow off a chunk of the beacon with the Doctor, Jamie and Zoe (but not the TARDIS) aboard, and tow it off to be salvaged.
There is a fight between the pirates and the Interstellar Space Corps, who believe the pirates' leader is an eccentric explorer called Milo Clancey, while in fact it is a man called Caven. Caven is assisted by Madeleine Issigri, daughter of his partner Dom, who he has double-crossed and keeps prisoner. When Madeleine discovers this, she shops Caven to the ISC and the exonerated Clancy gives them a lift back to the TARDIS.
With the exception of episode 2, this entire story is missing from the BBC archives; notably, the sole reason episode 2 survives is because it was recorded on 35mm film as opposed to the 2-inch quad videotape that was standard for BBC studio production at the time, motivating the network to protect the master negatives for the sake of historical preservation. Thankfully, these are the last missing episodes. Everything beyond this point exists, though not always in the originally recorded format. Also, this is the very first credited appearance of future producer John Nathan-Turner (credited just as "John Turner") in the production team.
- Asteroid Miners: Milo Clancy, and independent prospector, the Igrissi Mining Corporation, the big player.
- As You Know: Early in the first episode, the Space Navy officer announces his theory that the pirates are after "Argonite," which wouldn't be quite so egregious, until he adds, "the most valuable mineral known to man."
- Clear My Name: Unwittingly with Clancy, after Hermack pegs him as the pirate captain stealing the Argonite.
- Deadpan Snarker: The Doctor, when Jamie is revealed to still be alive.Jamie: Anything's possible in the TARDIS, especially when he's at the controls.
- Everybody Laughs Ending: A potentially Mood Whiplash-inducing one, given that the Doctor was desperately defusing a bomb less than two minutes earlier.Doctor: Well, [the TARDIS is] no problem. It's orbiting Lobos, Milo's home planet, in one of the beacon sections.
Zoe: Oh, no problem, eh? Well, how are we going to get to it?
Doctor: Milo's very kindly offered to give us a lift in the LIZ!
Jamie: Oh, no. Not the LIZ again. Frankly, I'd rather walk.
Doctor: Walk? You never know. You might have to.
Everyone: [Uproarious laughter]
- Genre Refugee: Milo Clancey is a Gold Rush prospector in a hard sci-fi story. This was done mostly for Twilight of the Old West symbolism.
- MacGuffin: The Argonite that everyone's after. It's stated early on the be "the most valuable mineral known to man", which is about the end of its meaningful role in the plot.
- Neoclassical Punk Zydeco Rockabilly: The name would suggest that it's just Pirates IN SPACE! The introduction of Clancey quickly turns it into a strange blend of Space Pirates in a Space Western.
- Nice Job Breaking It, Hero!: The Doctor's attempt to link segments up backfires spectacularly.
- Officer and a Gentleman: General Hermack. Unfortunately, he also spends most of the story being a complete idiot.
- One-Woman Wail: Used throughout the soundtrack to evoke the vastness of space.
- Out of Focus: The Doctor and his companions have noticeably less screentime and involvement in the plot than usual. The final episode has the curious distinction of being the only sixties episode (apart from "Mission to the Unknown") for which none of the regular cast were present for the studio recording, as they only appeared in pre-recorded inserts.
- Percussive Maintenance: When the lighting on Clancey's ship plays up, he fixes it by hitting a control panel with a spanner.
- Pinball Protagonist: The Doctor is barely in the first and last episodes. His only action that really affects the plot is increasing the power of the electromagnetism on the satellite segment, with most of the other victories being the payoffs of other cast members with Chronic Backstabbing Disorder.
- Poorly Disguised Pilot: There's no direct evidence, but many suspect the story was an existing (possibly abandoned) idea of Robert Holmes for an original IP, hastily adapted into a Doctor Who story. People who believe this theory note that the story was written in days to fill a hole when several other stories fell through, meaning Holmes would have been more likely to have gone through his spec script drawer rather than concoct a whole original story. The story on screen also has notable Pinball Protagonist and Out of Focus problems with regards to the Doctor's role, and an unusual level of detail into the worldbuilding and guest characters by the standards of the show at that time, which implies the Doctor's last-minute inclusion in a previously planned story.
- Prospector: Milo might live on another planet in the distant future, but he doesn't let that stop him from living this trope to the fullest.
- Sci-Fi Writers Have No Sense of Scale: Averted. Robert Holmes goes to great pains to establish that travel through space takes a good deal of time.
- Series Continuity Error: Zoe doesn't know what candles are, though she recognised them in "The Mind Robber".
- Sleep Cute: The Doctor, Jamie, and Zoe do a three-way version of this. Jamie and Two are getting particularly cosy with each other. They're not asleep, though, they're almost passing out from oxygen deprivation. It's still cute. (See the page image).
- Space Western: If you think of the titular pirates as actually being a gang of outlaws, suddenly the fact one of the main characters is a grizzled old prospector makes a lot more sense. And if his plaid shirt and over-the-top facial hair didn't make it clear enough, the Space Navy officer and his XO have a conversation in the second episode that seals the deal, about similar "old-timers" who ran wild in the early years of space travel, and now resent the advent of law in space.
- Used Future: Milo's rickety old ship, LIZ-79. The other ships are new and shiny, though.