Childhood friends Lizzy, who is gay and somewhat meticulous, and Luke, who is straight and more relaxed, have always been like family to each other. During their childhood, they bonded over their parents’ divorces and have remained close ever since. Now adults and still single, they decide to start a family together—not in a romantic sense, but through a clinical approach to conception.

After another unsuccessful attempt to conceive, they decide to unwind at a bar. There, Luke encounters Prudence, a carefree British woman who is soon returning to England. Lizzy isn’t thrilled about Prudence, possibly due to her habit of walking around their apartment unclothed, but Luke quickly forms a connection with her. As they spend every possible moment together before Prudence’s departure, Lizzy finds out she’s pregnant. Meanwhile, Luke surprises everyone by announcing his marriage to Prudence. And just like that, a new kind of family emerges.