David Murdoch is a middle-aged prison officer; widowed, living alone, he has one grown up daughter, Lucy, who is pregnant. She is his world. When Jules Hope, an inmate at HMP Ravenhill Prison, is taken ill, it’s Murdoch who escorts her to hospital. While Jules is waiting for treatment, Murdoch gets a phone call with an ultimatum that turns his life upside down. If Murdoch wants to see his daughter again, he must break Jules out of hospital and deliver her to the man holding Lucy captive. If he talks to the police, Lucy will die.

Murdoch knows he has no choice but to comply. But when the plan goes awry he is forced to take matters into his own hands.

Pursued by DS Susan Reinhardt (Rosie Cavaliero), Murdoch finds himself in a race against time to evade the law and save his daughter’s life.

David Murdoch er en midaldrende fængselsbetjent; enke, alene og har en voksen datter, Lucy, som er gravid. Hun er hans verden. Da Jules Hope, en indsat i HMP Ravenhill-fængslet, bliver syg, er det Murdoch, der eskorterer hende til hospitalet. Mens Jules venter på behandling, får Murdoch et telefonopkald med et ultimatum, der vender hans liv på hovedet. Hvis Murdoch vil se sin datter igen, skal han få Jules ud af hospitalet og aflevere hende til den mand, der holder Lucy fanget. Hvis han taler med politiet, vil Lucy dø.

Murdoch ved, at han ikke har andet valg end at efterkomme planen. Men da planen går galt, er han tvunget til at tage sagen i egen hånd.

Forfulgt af DS Susan Reinhardt (Rosie Cavaliero) befinder Murdoch sig i et kapløb med tiden for at undgå loven og redde sin datters liv.