At the end of the last episode, Polly and Ben went into the TARDIS to return the key to the Doctor. He dematerialized before realizing they were inside (how?), and he was NOT HAPPY about them being there. They end up in Cornwall several hundred years ago, running afoul of pirates and smugglers. Cue pirates looking for booty and the TARDIS crew getting into trouble. And that's about it. Not a good episode. There's only one 1st Doctor story left!
Companions: Polly, Ben
Episode: #28, "The Smugglers," four parts
Adversary: Captain Pike
Classic Lines: the Doctor, to Polly: "You may know where you are, my dear, but not when!"
Tuck This Away to Impress Your Friends: The pirates are looking for the deceased Captain Avery's gold. The 11th Doctor meets Captain Avery in the episode "The Curse of the Black Spot."
Next Up: "The Tenth Planet"