Charley falls asleep while reading a book in the TARDIS. When she wakes she is surprised to discover she is no longer on board the TARDIS, but an airship. Wandering around the ship, Charley finds a bar filled with people. Talking to the bartender, she learns the passengers are all on a journey. While awaiting the Doctor's arrival, she talks to people. Each tells the story of how they came aboard the airship. Charley comes to understand that all of the passengers have been removed from their own timelines to protect the Web of Time.