In 2006, DCI Sam Tyler is on the trail of a repeat offender, willing to do whatever it takes to track his man down and bring him to justice. Moments later, he's in 1973, with no clear clue as to how to return to whether he can return to his home-time or if he might have only dreamed of the future, instead belonging in what he believes is the past. He may be dreaming, time-traveling, falling into madness, or any other number of possibilities, but at the end of the day Sam Tyler is determined to return to the life he knows to be his.