After participating in a study on monogamous marriages, Jonathan and Mira host an unconventional couple for dinner, which swells with tension as Mira withholds a major announcement from her husband. Later, when Mira finally divulges the news, she and Jonathan must navigate the consequences.

Back early from a business trip, Mira brings a crushing revelation home with her. While she and a blindsided Jonathan struggle to process the bombshell news, their latent anger, guilt, and resentment reach a fever pitch.

A year later, Jonathan and Mira reconnect. After debating a polarizing proposal, they begin to sort through all that they've learned since separating, rekindling old connections at the risk of exacerbating dormant wounds.

Faced with rehashing their final break up, Jonathan and Mira reconvene, opening up to each other in ways they never have before. As they explore the root of their connection, they ultimately find the source of their deeper animalistic impulses.

After a period of self-reflection, a slightly older and wiser Mira and Jonathan each reassess their past, present, and future as the reality of their complicated love story sets in.