Charles and Cuevas help an elderly patient and her developmentally disabled grandson. Halstead treats a swimmer with a heart condition. Marcel considers using the OR 2.0 for surgery. Asher and LIeu search for a lost pregnant woman.
Marcel and Charles treat Lieu's gym buddy; Maggie and Halstead help a robbery-homicide suspect; Asher and Archer use Med's new opiate-abuse AI program.
Goodwin, Maggie and Dr. Marcel help victims of a hit-and-run accident while Dr. Halstead struggles to diagnose a patient with seizures. Dr. Asher and Dr. Archer clash with Jack Dayton.
A brutal storm rocks Chicago. Will encourages Dr. Grace Song to go against her own findings for the benefit of their patient. Hannah rushes to the hospital to help Archer's pregnant patient. Maggie's concern for Ben consumes her.
A construction worker's hand is severed. Crockett uses advanced technology to try to reattach it. Meanwhile, Charles and Goodwin negotiate with a custodial union. Also, Hannah works to prevent a mother and newborn from being separated.
Halstead and Cuevas struggle to diagnose a patient with a rare disorder. CFD and Med staff work to free a paranoid father trapped in the MRI suite. Tanaka-Reed gets an ego check.
A documentary crew visits Med to film Marcel and Abrams' groundbreaking surgery. Archer refuses to ask for help for his kidney issues. Halstead develops feelings for a coworker.
The fate of the hospital rests on the vote of a board member; Archer helps a mother with a rare stem cell disease while Asher treats the woman's pregnant daughter; Charles encounters a schizophrenic patient with a hearing impairment.
Shocking information threatens Jack Dayton's surgery and the future of OR 2.0; Archer goes rogue to save a patient in need; Maggie questions her future at Med.