A congressman (guest star James Waterston) falsely accused of soliciting underage girls asks SVU to debunk the rumor, but the investigation leads to a real sex trafficking ring. Meanwhile, Benson (Mariska Hargitay) and Rollins (Kelli Giddish) become the targets of a salacious website.
As Alicia defends a husband accused of murdering the babysitter, she and her family prepare for the outcome of Peter's appeal and his possible coming home.
Firehouse 51 responds to an odd call from a neighboring firehouse and the unusual circumstances prompt Severide (Taylor Kinney) and Cruz (Joe Minoso) to take the investigation into their own hands to search out the real story. The truck welcomes new firefighter Stella Kidd (guest star Miranda Rae Mayo), but her addition has repercussion inside the firehouse. Meanwhile, Casey (Jesse Spencer) moves forward in his run for alderman, but begins to realize that some voters have their own personal agendas for wanting him elected.
David's ex-fiancee re-enters his life in search of answers to the question, 'Why me?' Meanwhile, Nate has a psychic rendezvous, Keith's new job sends him into the closet, Federico identifies with David's past, Claire decides not to let life pass her by, George dumps some surprise baggage on Ruth, and Margaret weighs in on daughter Brenda's new relationship.
Nate gives Maya 'one last look' at a memorial for Lisa, where some surprise discoveries ensue. David and Keith are inspired by a same-sex wedding; George agrees to Ruth's marriage stipulations; Federico is disturbed by the 'new and improved' Vanessa; Brenda crosses a bridge with her therapy client; and Claire and Billy develop something in the darkroom.
