Clockword androids watch as the Doctor snogs a woman he met when she was a little girl. And then there’s a horse.
The Doctor and Rose take Mickey on his first trip through space and time to a 51st-century spaceship, where Mickey promptly pulls Rose off-screen, so that Doc can go have his own adventure.
After encountering an 18th century fireplace aboard the ship, and finding that it’s only one of several portals to different periods in the life of one Reinette Poisson (actually Jeanne Antoinette Poisson, also known as Mme de Pompadour), things are looking pretty trippy, but it’s not until The Doctor finds that sinister Clockwork Droids are surveilling her development through time that stuff gets really nasty.
The spaceship has human parts fused into its circuitry, Rose and Mickey are about to be stripped for parts, and on top of all that there’s a horse aboard the ship!