After being sent into a coma by a high-speed hit-and-run in 2006, DI Sam Tyler found himself in 1973 working for DCI Gene Hunt. Even though he managed to get back to the 21st century, Sam discovered that he felt empty in the present day and threw himself off the roof of his police HQ, in order to return to the seventies. From then onwards, Sam continued working with Gene and the team until his own eventual 'death' in 1980.