More tent scene! When we last left our anti-heroes, they were busy squabbling.
If you're wondering who that guy is who interrupts Brutus and Cassius's hug-it-out session, it's "Poet", not to be confused with "Cinna the Poet", and also not to be confused with "Character Who Is Remotely Relevant".
"Poet" is apparently based on Marcus Favonius, a philosopher and senator whom Plutarch credits for helping heal the rift between Brutus and Cassius... which would be fine, except that in Shakespeare's play, he enters after Brutus and Cassius have reconciled, making him totally irrelevant and, unsurprisingly, often cut from productions. I don't think I've ever seen "Poet" on stage.