Little Favour follows the story of Wallace when he was in touch with a former colleague to help him escape from a problematic deal. It has been 7 years since he left the service of Her Majesty and 10 years since the American counter part who saved him on a common task in Iraq became his friend. He uses his abilities on a lucrative business while managing to keep his secret battle with PTSD to be kept confidential. One day, when finally decides to try his hand in a functional relationship, his old friend James requested a Little Favour. How can he refuse the man which he owed his life?