Chief Boden meets his new neighbor, who asks him for a favor that leads to serious consequences. Severide takes offense to being treated like a candidate by Captain Patterson by undermining him during a call and the situation reaches a boiling point. Cruz receives a surprise visit from his past when Freddie, a gangbanger who knows Cruz's brother Leon, comes to visit and ask for a favor. Elsewhere, the team is called to a harrowing scene of an 18-wheeler and receive a thanks in the form of tickets to see the band Rush, much to Mouch and Herrmann's delight.