In Sheffield in 1989, teenagers Daniel and Alison meet at a house party and bond over their shared love for music. The relationship they forge that night follows them forever.
In 1989 Sheffield, Daniel and Alison's relationship deepens through mixtapes, but Alison hides a secret. Years later, Daniel revisits her, wondering if she's still the same woman.
In 1989, Alison's home life worsens as she cares for Peter and her alcoholic mother. In 2015, Daniel grapples with Alison's past revelations and their shared night.