Benson is called in after a young woman shows up at the hospital, raped and beaten with her head shaved. Haley Kerns refuses to submit to a rape kit, but Benson steals her underwear before leaving the apartment and gives it to Warner to check out. When Benson returns to her apartment she encounters Star Morrison, who admits that Haley is a federal informant working with them on eco-terrorism. After Stabler is wounded while out on a search with Morrison, Benson and she work to get information from Haley before the eco-terrorists can strike.

Novak tries to find Benson when the case for a previous rape victim, Chelsea Arndale, hinges on her testimony. Benson, meanwhile, is still living as Persephone James and has been arrested in Oregon after the ecologist's group she has infiltrated is involved in a fracas with the local police. After the local sheriff advises her that her group is being looked at in connection with a recent murder, Benson decides to do a little investigating on her own and learns that the man was a pedophile. When she finally finds his private hideaway, it leads to a shocking conclusion.