The official trailer for Below Her Mouth begins to the sound of heavy breathing as two women passionately touch one another in a dimly lit setting. Shortly after, we're given a glimpse of the women's lives. Dallas (Erika Linder) is a roofer and Jasmine (Natalie Krill) lives in a home near one of Dallas' jobs.
The women meet at a girl party one evening and sparks fly. After making advances at her, Dallas convinces Jasmine to go on a date. The catch is Jasmine is engaged to a man named Rile (Sebastian Pigott). Nevertheless, she agrees. The women act on their sexual urges and as Jasmine and Rile attempt to make further wedding plans, she becomes enamored with Dallas. They embark on a steamy affair, plenty of sensual moments are depicted in a variety of different places, and Dallas pleads with Jasmine to leave Rile.