After finishing a shift, Carter approaches Weaver about an attending position, and then gets sucked back into work when a stampede at a rock concert brings in many patients. Abby and Luka break up. When Weaver goes MIA, Malucci and Chen make a severe mistake with a patient, ultimately leading to the patient's death. They blame it on Weaver for not answering their pages; we later see that Weaver left her pager in the bathroom at Doc Magoo's. Carla and Reese get into a car accident, which kills Carla and injures Reese. Mark and Elizabeth struggle to balance parenthood and their schedules.