 The Eleventh Doctor takes Amy and Rory on a holiday to the planet Appalapachia, unaware that the planet is suffering from a fatal plague that affects beings with two hearts including the Doctor and can kill them within a day.The population has created "kindness facilities", where those infected by the plague are placed in one of several thousand accelerated time streams, allowing them to live out their lives whilst in communication with their loved ones through a large glass lens in the waiting room.On their arrival, Amy is separated from the Doctor and Rory, and becomes stuck in an accelerated time stream.