A new ADA on the case urges the task force to flip a member of the brotherhood to get the evidence they need. Stabler must come to terms with the legacy his father left him. Bell and Nova's worlds start to overlap in more ways than one.

As the task force makes a critical arrest in the case against the Brotherhood, the Marcy organization ups the ante with a dangerous shipment of illegal weapons. Stabler looks for ways to gain Webb's favor while staying loyal to Donnelly.