While investigating a congressman who is falsely accused of soliciting underage girls, the SVU uncover a sex-trafficking ring.
Peter is electronically tagged upon his release from prison, and Alicia helps with a murder case in which a client's husband is the main suspect.
Firehouse 51 responds to a suspicious call from a neighbouring firehouse, so Severide and Cruz investigate. Also, the team welcome a new firefighter.
Wheeler and Nichols investigate a murder that is linked to the Olympic Site Selection Committee. They question the embassy and security staff, as well as the victim's relatives.
Nate and Maya attend a memorial for Lisa; David and Keith are inspired by a wedding; George agrees to Ruth's marriage stipulations.