The Doctor awakes from a sleep and feels that something is in the TARDIS with him, noting a drop in temperature. He searches his surroundings before checking the console. While he set the TARDIS for Earth in the 20th century, he has impossibly drifted into the vast black regions of the outer Universe, meaning he'd have to have been sleeping for a month. He wakes up, wondering if he's become the apparition, and finds he's seated in the TARDIS with a plate. It was just a bad dream from eating strong cheese in space.