With the gang's arms dealer in custody, Jackie thinks he's a step closer to glory. But DeCourcy is the one in a position to negotiate and he's considering cutting off the gun supply rather than going after the buyers. Jimmy and Frankie must find a new dealer as they prepare for their next job. Cathy and Jenny struggle to comfort their daughters who've undergone trauma. When Michaela falls into some trouble, Rachel decides to take her investigation into her own hands.