Life at UNIT and the cover up of The Doctor's true identity from his fellow colleagues needs more. The Brigadier sends him to the Middle East to serve as a mechanic on a 6-month tour. He never wanted to fight but to keep his family he would. Flash forward a year and The Doctor isn't sleeping. At first this doesn't affect him, Timelords don't need as much sleep anyways but like every creature he needs to rest eventually and if sleeping pills don't work for him, the alternate may prove to nearly destroy his family and his life.