The play opens with M asking W if he wants to have a baby. This question sparks a spiral of anxiety in W, a Ph.D. student obsessed with carbon footprints. Over the course of the play (which runs roughly 80–90 minutes without an interval), we see the couple:

The play follows a young couple (unnamed, often called “Woman” and “Man”) over roughly a decade. They are in a supermarket when the Woman suddenly announces she wants to have a baby. From that spark, the play hurtles through: