Maximum Pleasure Guaranteed

Paula is a journalist in the midst of a messy divorce from her ex-husband Karl which centres around the custody arrangements of their daughter Hazel. Having to leave the family home to Karl and his new girlfriend Mallory, Paula moves into an apartment and struggles with feelings of failure and a lack of accomplishment. She begins paying Trevor, a webcam boy, for his time, during which she vents about her life and enjoys sexual experiences with him. One night, during one of their sessions, Paula witnesses Trevor being brutally attacked in his home. Reporting it to the Police, Detective Sofia Gonzalez believes it to be a scam, and states that there is not a lot she can do considering the limited information that Paula knows about Trevor. Paula then begins getting calls from Trevor stating that he is going to be killed if she does not send £15,000 to his attackers. When she eventually challenges him, Trevor blackmails her, revealing that he will destroy her life using the information she has shared with him in their sessions. Paula is able to determine where Trevor lives and, after an argument with Karl where he refuses to allow Hazel to stay with her over the holidays and incensed by continuous calls from Trevor, drives over alone to confront him. When she arrives at the house, she finds Trevor dead in the bathroom and hears someone approaching.

In a flashback, Trevor is shown to be in a relationship with an older man, Frank, and proposes that they buy a run-down building and convert it into student apartments to make money. Frank later brutally murders Trevor and leaves to get tools to dispose of the body, unaware that Paula has entered the house in the meantime. Paula is able to escape from Frank, but then gets into an argument with Karl and is chastised by her boss Suzie for her lack of commitment to her job. She later has a tense conversation with Mallory about feeling as though she and Karl are trying to take Hazel away from her. Detective Gonzalez arrives at her office to question her after Trevor's body is found by a neighbor and is suspicious about why she didn't call the Police and begins investigating her. An overwhelmed Paula confesses to her co-workers Geri and Rudy that she was scammed online. Frank returns to Trevor's street and finds Hazel's soccer cleats, which were accidentally left behind by Paula during her escape.

Karl and Mallory tell Paula they are moving to Boise, Idaho and offer to buy her a house out there so she can stay near Hazel, but she declines. Detectives Gonzalez and Baxter investigate Trevor's house and theorise about what really happened to him. Gonzalez calls Frank, who is using the name "Dennis", to inform him that Trevor has died, and he pretends to be upset. Baxter then reveals to Gonzalez that this is not the first dead body that Paula has been associated with. The anonymous caller tells Paula they want $15,000 by the end of the day, so she wires them $1 to learn their true identity. She argues with the caller, revealed to be a woman named Ash, who is not aware that Trevor is already dead, and attempts to contact him after Paula reveals this. Frank buys soccer cleats, hides trackers in them, and then drops them off at various schools trying to find Hazel. He follows and attacks Mallory, believing her to be Paula. Realizing his error, he steals her jewellery and leaves her in the woods.

In a flashback to two years prior, Paula and Karl are married and living in Portland. Paula is driving home from a birthday party with Hazel, dejected that Karl spent most of the time at the event flirting with Mallory. Later, Paula calls Karl in a panic, saying she accidentally hit their neighbor Caleb with her car. Karl and Mallory arrive and help Paula cover up her culpability in Caleb's death. In the present, Frank goes to see Gonzales and Baxter and provides an alibi that checks out. While Mallory recovers from her attack, Gonzales phones Karl and raises her suspicions about Paula. Geri and Rudy confess to Paula that they snooped on her laptop and know about Trevor, and Paula is forced to come clean about Trevor's death and escaping the scene of the crime. Frank tracks Paula to her apartment and prepares to enter her home.