Severide is brought into the District for questioning after his car is found to have caused a deadly crash. As the investigation gets underway, the team works to uncover a group of car-jackers who may be the key to Severide's innocence. Meanwhile, Voight pairs Burgess with Olinsky, who has a hard time feigning his excitement about this new partnership, and Lindsay considers meeting her estranged father who is now out of prison.