Mark (Jason Ritter) invites Sarah (Lauren Graham) to a friend's engagement party which stirs up a serious conversation about a baby in their future. Meanwhile, Amber (Mae Whitman) receives a job promotion but questions her own qualifications, Adam (Peter Krause) and Crosby (Dax Shepard) clash over business strategy for The Luncheonette and Zoe's (Rosa Salazar) behavior causes Julia and Joel to question their adoption agreement.