Nina Farley (Chloe Howman) is a single 27 year old mum of a 3 year old son, Danny. Her lack of education and any relevant skill-set led her to entering the world of prostitution to support herself and her son. Nina, whose life means nothing to her, devotes all her time and energy into raising her son to be someone successful and dignified, unlike her. Nina's best friend, Annette Hayes (Nadine Lewington), met Nina in primary school. Annette was a preppy yet emotionally unavailable sales girl when she got married to a significantly older high-profile financial investor but alcoholic, Jacob (Jamie Glover), with whom she shared no intimacy. The couple cannot conceive due to Annette's infertility, although she desperately wants a child. Jacob continuously violates Annette sexually, physically, and emotionally. Annette, in turn, is terrified of her husband's paranoia and fits of temper.
Over time, Jacob becomes convinced that his wife is having an affair and rushes home to confront her, in the presence of Nina. Once he sees her, Jacob loses his temper and starts viciously beating Annette up. Nina tries to protect Annette but he overpowers her as well. This distraction allows Annette to grab a heavy vase and smash it onto his head, killing him. Nina and Annette scramble to hide the body, but they discover that the neighbours have already called the police due to the disruption that they caused. So, in a moment of desperation, Annette begs Nina to take the fall for the crime, in exchange for Annette taking care and raising Danny with the significant sums of money she will inherit from her husband's death. Nina, whose purpose in life is to provide her son with a better life, reluctantly and remorsefully accepts the offer, framing herself as the murderer when the police arrived. Nina undergoes trial, where she is sentenced to life in prison. Annette cannot visit Nina for fear of being accused of being an accomplice, but she applies for custody of Nina's child to show that she has forgiven Nina, all that being part of the ruse that Nina and Annette have planned, where Nina is blamed for the murder of Jacob, with the motive being her unrequited love for him, and Annette plays the innocent widowed victim.
One year later, Nina's friend, Isla (Ruth Negga), also a prostitute, visits Nina in jail. Nina asks Isla to visit Annette and check on how her son Danny is coping. When Isla goes to Annette's house, Danny is no where to be seen. Annette buckled under Isla's persistence and admitted that she couldn't raise a son that was not her own, despite her inability to conceive on her own. Isla runs back to the prison and lets Nina in on the news. Nina, heartbroken and betrayed, calls for her lawyer and asks him to appeal the decision. She changes her testimony and retells the whole story as it happened. The story doesn't hold enough credibility to prove her innocence, but it makes Annette a suspect, and she is arrested accordingly until a further trial determines which one of the women, if either, is innocent. Nina and Annette are involved in an intense physical altercation when they meet in prison, but are broken up by the guards, and stay distant from each other after that. Annette, however, rallies up some other inmates and manipulates them into believing that she is the victim and Nina is the one who ruined her life. Annette, then, recruits them to devise a plan to kill Nina in prison, which would hurry the trial and help her get out of the prison. The plan is set in motion, and the day comes where it is to be carried out. In the bathroom, Annette and her posse corner Nina and light up the bathroom in an attempt to burn her alive and leave no traces. Nina, however, pulls Annette in with her and the two fight in the middle of the burning bathroom. The fire, however, quickly catches on and both of them run around trying to find a way out to no avail. Annette's posse run away from the scene to save their own skin, and the jail personnel hurry to put the fire out. During the altercation, Annette's number tag falls inside Nina's shirt, whereas Nina's number tag falls to the ground. When the officials are retrieving the bodies, they find that one of them is dead and the other is alive. The one alive is the woman with Annette's number tag tucked inside her shirt, so they pronounce Nina dead and go on to save Annette and reconstruct her burned face, when, in reality, Annette is the one who died, and Nina is the one alive but is believed to be Annette.
Nina, who everyone believes to be Annette, undergoes many construction surgeries whilst she's unconscious, and after a few days, wakes up to find that she has assumed Annette's identity and face. She freaks out at the beginning, screaming and jumping around the hospital muttering phrases like "this is not me", "you ruined me", "wake me up", to which everyone responds to kindly because they assume it's just PTSD. Then, she gives it some thought and after asking about what happened, concludes that they thought she was Nina because her face was burned off. She remembers what her lawyer told her, about Annette standing a better chance in court, and she decides to go along with the lie. Nina goes back to prison as Annette, and waits for her trial. In court, Annette's legal team actually wins the case, and Nina (who everyone presumes to be Annette), gains her freedom and leaves prison. Nina then collects all the money that Annette had inherited from her husband, she retrieves her son from the foster home after applying for another custody as Annette, and she travels to a different country. Nina was never going to be given a chance in the environment that she lived in. Everybody had given up on her, and she had given up on herself. In the form of this new life, however, Nina has found a controversial yet miraculous chance at redemption, and for once, she can live her life - correction, Annette's life - with the resources, and the more importantly, the dignity, that Nina was never going to gain in her previous life, no matter how much she tried.
The film will end with this voiceover from Chloe Howman, who plays Nina:
'I didn't hate my life. I didn't acknowledge it. It was never a life. It was loud, ticking, clock. It was one long journey towards self-destruction. And Danny, I lived for Danny. I lived through him. I didn't live my life. I was living his. I had my chance and I blew it. I was never going to allow that to happen to him. He will forgive me - I thought. He will forgive me for being a prostitute, a leech on this society, an embarrassment. He will forgive me because I did it all for him. I sold my body, to buy him food. I was a treated as an object, a sex toy, to buy him all the toys that he had wished for. I listened to the scum of the earth and have went to hell and back because I wanted my little boy to never step foot outside the heaven I had created for him. It is a cruel world, and I was not about to let it ruin him. And now, I live in Annette's skin. I was signing my credit card bill last month and I wrote Nina, instead of Annette. I can never be Annette, but I will try anyway. For Danny, I was a prostitute. For Danny, I am Annette. This song, it's all for him. But I get to enjoy the luxuries that I could never have afforded before. I eat decent food, not the cans of pineapple that found shelter inside my worn out body. I get to be called Mrs. Hayes, instead of "you bitch". I get to wear some nice clothes, instead of the mini-skirts that my pimp forced me to wear all night. The people back then were never going to give me a chance. I'd be lying if I said that this is some sort of a magical metamorphosis, because it's not. But it's a second chance, at life, and maybe, just maybe, a second chance at happiness. And for once, the clock stopped ticking.'