Plot
While driving on the highway, married couple Carey and Ashley briefly attempt to have sex before observing another couple crash on the side on the road. Carey and Ashley pull over to help, finding the husband barely conscious and the wife ejected from her seat. Despite Ashley’s attempts to perform CPR, the wife is pronounced dead. Shaken, Ashley admits to Carey that she wants a divorce and has been unfaithful. An upset Carey flees to the beach house of his best friend Paul and his wife Julie. While consoling Carey, Paul and Julie admit that they are in an open relationship, shocking Carey.
The next day, a confrontation arises when a man accuses Paul and Julie’s son Russ of stealing his jet ski. With Paul away on a business trip, Carey defends Julie; the situation escalates into a fight until Julie intervenes by striking the accuser. That night, Carey and Julie spend time together, bond, and eventually have sex. When Paul returns to the house the next day, Carey tells him about the previous night. Paul becomes furious, leading to a violent argument and fight in the house. Julie and Russ return home during the fight; Julie forces both men to apologize.
Carey later joins Julie and Russ at a carnival, but becomes jealous and aggressive after seeing Brent, the father of a friend of Russ, flirt with Julie. Julie confronts Carey, who admits the sexual encounter meant more to him than expected. Julie urges him to move on. Carey returns home and finds Ashley sleeping with another man. Ashley attempts to convince Carey to leave, but Carey instead suggests entering an open relationship to avoid divorce. A hesitant Ashley agrees after Carey reveals he has already slept with another woman, but does not reveal that it was Julie. Ashley takes on a series of short-term lovers, who Carey casually befriends and invites to live in the house, much to Ashley’s irritation. Now separated from Julie, Paul arrives at Carey and Ashley’s apartment to confront him, leading Ashley to learn that the other woman was Julie.
Julie encounters Carey working at Russ’s school, and informs him that Paul’s company has been shut down, their assets are frozen, and they are bankrupt. Julie also admits that she never slept with another person during her relationship with Paul. Carey reveals his growing feelings for Julie, which she reciprocates. Paul witnesses Carey and Julie kiss and passive-aggressively tries to get Carey to admit that they are seeing each other.
After a disciplinary meeting at Russ’s school, Julie angrily confronts Paul for getting indicted and taking out loans in Russ’s name and spitefully admits to her relationship with Carey. Paul is sent to jail, and after being released, he agrees to sign divorce papers for Julie. Paul and Ashley, who has become frustrated at Carey’s relationship with Julie and indifference to her relationships, consider having sex with each other to make their exes jealous, but decide not to go through with it.
At Russ’s birthday party, Ashley arrives with her lover Matt, who is performing as a mentalist for the party, while Paul brings a woman closely resembling Julie to provoke her. Ashley attempts to win Carey back, and Carey confesses he was jealous of Ashley’s lovers and befriended them to irritate her. Ashley kisses Carey, who insists on remaining friends. Julie privately confronts Paul, who admits that he also never slept with anyone else during their relationship and proposed the open relationship out of insecurity. They reconcile and have sex, which Carey walks in on. Carey, Paul, Ashley, and Julie get into an argument over their situation, which nearly escalates into another fight between Carey and Paul before they are forced to extinguish a fire caused by Russ’s birthday candles.
Some time later, Carey and Ashley are back together and have had a baby. Paul and Julie remain separated but maintain a sexual relationship. The film ends with all the adults at Paul and Julie’s former beach house, now being used as an Airbnb property, with Carey and Paul together getting into a fight with another neighbor accusing Russ of stealing his jet ski.
