Matt and Gabe are comic book writers brainstorming ideas for their graphic novel "The Last Man in the Universe". They discuss plot details and disagree on how their main character Marcus should react upon discovering Earth. Their debate covers aspects like how passive Marcus's character is, whether he should sob or remain stoic, and how he could have logically found Earth. They leave their apartment to get coffee from a local deli to continue their discussion, debating potential actors to play Marcus in a movie adaptation.