The entire gang came to Ponyboy's rescue after he was jumped. They are all taking and having a smoke. Ponyboy tries to distract them from what happened by asking Dally how he got out of jail. All Dally did was bring the conversation back to Ponyboys attack.
Cherry, Marcia, Johnny, Ponyboy and Two-Bit are at the movies for the re-run. Marcia has the coke Dally gave her and the rest have the popcorn they got. Johnny and Ponyboy are talking to Cherry. Marcia and Two-Bit are talking to each other.
This scene happens right after Darry started yelling at Soda. When Ponyboy told him to stop, Darry whipped around and slapped him. Now they are all in shock. Ponyboy is shocked he was slapped, Darry is shocked that he slapped him, and Soda is just plain shocked. Right after this scene, Ponyboy turns around and runs away.