The Doctor was in love once. A woman he could spend the rest of his life with. Another Time lord. He had never loved anyone as much as he loved her. But...one day, the two were separated. They searched and searched, but never found each other. Time Lord Katherine Green, decided that she would continue her travels. Obviously not to other planets or times, due to lack of transportation, but around to other places on modern day earth. While investigating a suspicious High School, she runs into the last two people she thought she'd ever see. The Doctor, and Sarah Jane Smith!