The film centers around Emma Marx (Penny Pax), a woman who is unable to embrace modern-day romantic ideals. Feeling more and more like an outsider as she watches her sister, Nadia (Riley Reid) get swept up into a whirlwind of wedding plans, Emma fears she is emotionally and sexually abnormal. That is, until a chance encounter with a wealthy older man opens her up to a world she never dreamt possible. The two enter into a contractual BDSM relationship that allows her to explore the freedom and surrender that comes with the mental and physical aspects of the lifestyle. The Submission of Emma Marx introduces the couples genre to a different kind of love story, that will challenge the idea of normalcy.

When a new contract is drafted up defining the parameters of their BDSM relationship, Emma realizes that Mr. Frederick is anything but predictable. With new rules pushing her beyond her emotional and sexual limits, Emma finds herself caught up in a whirlwind of erotic excitement. But when someone from Mr. Frederick's past resurfaces, her world is rocked to the very core. Rattled by the realization that sometimes the road to sexual freedom comes with a price, Emma must confront her inner demons and decide whether she's capable of a relationship that challenges the boundaries she's defined for herself.

Emma and Mr. Frederick's relationship reaches a heightened level of intensity and closeness when his career takes them to Atlanta, Georgia. The change of scenery provides them with a new erotic world to explore - filled with adventure, passion, and a level of trust the two have never known before. But, when Emma's life suddenly takes an unexpected turn, she's left wondering whether she's truly cut out for a BDSM relationship. Vulnerable, uncertain, and fully exposed she's to navigate through a world that begins to challenge everything she's ever known.

Ever since the death of her first dominant, William Frederick, Emma has struggled to adjust to life as a submissive without him. Unable to form lasting connections with other men, Emma chooses to abandon the lifestyle completely. But, her world is flipped upside down when she meets Mariah, a sassy young woman eager to explore the BDSM world. Seeing much of her former self in this young woman, Emma takes it upon herself to educate Mariah about life as a submissive and volunteers to act as her temporary dominant. However, things become complicated when Mariah grows attached to Emma and wants their arrangement to become a permanent one. Will Emma be able to walk away from the life she always loved and a girl who desperately needs her? Or is there more in the BDSM world for Emma than she ever fully realized?