The film opens on the dead body of Dean being dragged into a shallow grave in the dead of night by his wife, Cassie Naylor and the old farm hand Cooper. As they carry out a rudimentary and hurried burial, all the while they are unknowingly being watched by Cassie's 8 year old daughter, Amy. The story then jumps to eight months later. Cassie is struggling; her relationship with her two daughters, Amy and Hannah is fractious. She is struggling to run her farm and her financial situation is so bad that she can no longer afford to pay Cooper. She is visited by a sinister neighbouring farmer, Karsten who is eager to buy Cassie's farm and marry her, both of which Cassie declines. Enter Aden, an old friend of Dean's who was passing. Quick to cover up her secret, Cassie tells Aden that Dean left. Aden asks if he can stay the night and after some convincing from Amy, Cassie reluctantly concedes. The next day Aden persuades Cassie that he can be of use to her on the farm and Cassie allows him to stay on, much to the displeasure of Cassie's 16-year-old daughter Hannah who immediately dislikes Aden, sussing out his intentions of getting "into my mum's knickers". Karsten's interest in Cassie escalates as his jealousy of Aden mounts. He throws around irrational threats, gloatingly kills one of Cassie's calves and builds a roadblock denying Cassie access to the outside world. This is the last straw and Aden tells Cassie that he will "talk to Karsten". But instead Aden kills Karsten and his brother, Noah in cold blood. Life on Cassie's farm settles down as she believes that Aden had a strong word with Karsten and she quickly falls for him. Aden helps Cassie out with her finances, making a good deal on cattle feed and suggesting that she get rid of Cooper as he is costing too much. It's after the firing of Cooper that Hannah confronts Aden, knowing that what he really wants is to control the family. Aden enjoys her teenage bravado, and quickly retorts with his knowledge of Hannah's deepest secret: Dean's abuse of her. Stunned and hurt, Hannah flees the farm. What follows is Aden's irrational hunting of his "daughter", much to Cassie's shock. When he returns to the farm without Hannah, Aden strikes Cassie. He is clearly deranged and Cassie walks him off her property at gunpoint making it clear that if he ever came back she would kill him. She tracks down Hannah and for the first time in a long time, mother and daughter connect. Hannah promises to return in the morning. That night, Cassie finds Dean's wedding ring amongst Aden's things. Spooked, she traipses back to Dean's unmarked grave with shovel in hand and digs up the grave only to find it empty. She contacts Cooper stating that "there's no body". The next morning Cooper and Cassie find her prized bull dead, throat slit. This is the last straw for Cassie and she marches up to Karsten's place determined to sell her holding to him, but what she finds is the rotting, fly-ridden bodies of Karsten and Noah, and Aden living in the house. Cassie tries to escape with Amy but Aden knocks her out and takes her and Amy back to the farm. As Cassie comes round, Aden confesses all: Dean was not dead, but escaped from the grave and fled back to the oil rigs - the only other place he knew. There he told Aden everything; the abuse of Hannah and his "murder". Aden tells Cassie of his disdain of the man who "had everything and pissed it away". Realising that she is now in the hands of a psychopath, Cassie tries to talk Aden round but all he wants is for them to be a family. The moment Hannah returns home, Aden locks Cassie and her daughters in Hannah's room. It is here where the truth comes out and for the first time, as mother and daughter talk about Dean's abuse. Cassie confesses that she tried to kill Dean when she found out about him abusing Hannah, but he escaped and went back to the rigs. Amy admits to seeing her mother bury her father's body. Now with all the secrets out in the open, the three of them bond and unite. What follows is Aden's attempt at playing "happy families", and the girls attempt at ridding themselves of Aden. Together they manage to lure him to the slurry pit. Little Amy surprises Aden and pushes him into the cavernous pit of cow excrement. In the final moments, Cassie spots Aden's lighter in the mud, she strikes it and lets it fall into the methane-filled cavity. The pit and the surrounding methane erupt in a massive explosion, leaving Cassie, Hannah and Amy clinging to each other, as a family.
