Drama series about Sam Tyler, a Manchester detective who suffers a near-fatal car crash and wakes up in what seems to be 1973. Sam's faith in the criminal justice system brings him head to head with Gene Hunt. Sam decides to embrace his new world but discovers that Gene is planning to plant evidence to secure the conviction of Kim Trent, an elusive criminal. Sam releases Trent, but when a young woman gets caught in the crossfire as a result Sam is forced to question his methods.