Detective Sam Tyler is a rising star in the 125th Precinct of the NYPD in 2008. He's investigating a string of homicides, when his girlfriend and partner, Maya Daniels, is abducted by the suspect, Colin Raimes. Looking for Maya, he is hit by a car while talking to female officer. When he wakes up, he's in 1973 wearing period accurate clothes. He doesn't realize he's in '73 until he spots the Twin Towers, still up and around. Sam must figure out how to work with the anything-goes Lt. Gene Hunt while he tries to get himself back to 2008.