Roland Buck III

Officer Nolan and team are on a hunt to retrieve a buried stash of gold before any treasure seekers get hurt; Bradford is tasked with encouraging the oldest cop at the station to retire and invites him to ride with him.

Dr Halstead treats a blast from his past, and Manning and Charles try to treat a young patient who refuses to take medication.

Dr Charles and Dr Manning treat a patient who is invested in pretending to be someone other than himself. Noah doubts his abilities as a doctor. Dr Marcel and Dr Choi face a tough ethical decision and Dr Halstead puts his faith in an addict.

Rhodes and Zanetti race to save a member of Firehouse 51, April's brother struggles during his first day at the hospital, and a woman saved from a burning building leads to a bigger mystery.

Dr Rhodes begins his cardiothoracic surgery fellowship, but gets off on the wrong foot with his new boss, Dr Latham. Meanwhile, Dr Choi begins his life as chief resident, and Sarah is caught off-guard by Dr Charles.

A car crash at the Chicago Marathon leaves victims in critical condition, and April and her medical resident brother must perform an operation in the field. An 8-year-old girl experiences sudden hearing loss, and Dr Choi treats a malnourished woman.