With the FBI closing in on the Roy Walton investigation, Voight and Halstead strategize on a way out. After a city bus driver is shot by a passenger, the team investigates a possible abduction.
After a woman is murdered in her apartment, Danny and Baez turn to her daughter for help, but instead she complicates the investigation; someone from Jamie and Eddie's past launches a smear campaign against them.
After a 16-year-old kidnap victim escapes her captors, her parents hire Magnum, who experienced similar trauma as a POW, to find who took her.