The film had its world premiere at the South by Southwest Film Festival on March 14, 2015, debuting in the Narrative Feature Competition section.[3] It then had its European premiere at the Champs-élysées Film Festival on June 13, 2015.[4]6 Years was released on video on demand platforms on August 18, 2015 by The Orchard, and is scheduled to be made available worldwide on Netflix on September 8, 2015
A young couple, Melanie Clark (Taissa Farmiga) and Dan Mercer (Ben Rosenfield), experience joyful moments in their relationship, including having passionate sex. After a house party one night, Mel drives to Dan's house drunk. Berating her for being reckless, Dan requests that she stay the night. Mel reacts angrily and pushes him into a dresser, causing Dan to sustain a head wound. At the emergency room, Dan lies about how he got the injury, covering for Mel.
Dan interns at Austin-based record label Topo Records. His co-worker Amanda (Lindsay Burdge) notices his head; she points out how different the situation would look if it had happened to Mel and not him. Mel starts a job as a teaching assistant at an elementary school. One night, her friends ask how she and Dan keep things fresh, and Jessica (Molly McMichael) suggests they should watch porn. Dan later catches Mel watching a porn film.
The next day, they go for lunch with Dan's mom Joanne (Dana Wheeler-Nicholson). Before Mel arrives, Joanne tells Dan that she and his dad will pay his rent if he chooses to move to New York City. A few nights later, Mel and Dan go to a pool party thrown by Mark (Joshua Leonard). After Mel leaves, Dan kisses Amanda. He apologizes, and they agree it's best to be friends. The next morning, Dan goes to Mel's house and she notices his odd behavior. He denies there's anything wrong. That night, Mel borrows Dan's phone at a party and sees a text from Amanda talking about their kiss. They argue. Trying to subdue Mel's lashing out, Dan holds her to the ground, but cops show up and detain him. Dan is released the next morning, but refuses to speak to Mel. They drive to Dan's house silently.
Dan is offered a job at Topo Records' new office in Brooklyn. To celebrate, he goes to a bar with Amanda. She apologizes for sending him the text, and Dan informs her that he and Mel are on a break. Meanwhile, Mel attends a party with her friends, where she meets Will (Peter Vack). After becoming intoxicated, Jessica and Will take her home. Jessica goes back to the party, but Will stays behind. Will tries to initiate sex with her, but Mel pushes him off and he leaves.
Mel tells Dan about Will and tearfully asks him to hold her. The two then go to Houston to help Mel's mom move out of Mel's childhood home. While there, Dan visits his mother who encourages him to take the job. Later, Dan tells Mel about Brooklyn and she accuses him of only thinking of himself. He, in turn, calls her needy and Mel orders him to leave. Back at Dan's house, he and Amanda have sex. The next morning, Mel arrives to apologize and catches Amanda leaving. She throws a glass across the room and pushes Dan into the glass, injuring his foot and hand. At the hospital, Mel tells Dan he should move to New York, and the two emotionally break up.