A gruesome serial killer is terrorizing London while brilliant but disgraced detective John Luther sits behind bars. Haunted by his failure to capture the cyber psychopath who now taunts him, Luther decides to break out of prison to finish the job by any means necessary.

Joe, an overwrought rancher is striving from his harsh upbringing, trying make a better life for his family. When his business falters, Joe fears his son, at the age of 15, will follow in his footsteps, and decides to drive him from home.