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.

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.

Halstead and Marcel facilitate a trans-organ exchange. Asher and Cuevas help a sexual assault survivor. Choi and Archer treat a patient whose case could expose a fraudulent doctor.

Halstead relies on Marcel and Med's newly donated OR 2.0 to save his patient. Charles helps an elderly, confused patient who's mourning the loss of his high school sweetheart. As their wedding day approaches, Choi and April run into some roadblocks.

A brutal storm rocks Chicago. Halstead encourages Dr. Grace Song to go against her own findings for the benefit of their patient. Asher rushes to the hospital to help Archer's pregnant patient. Maggie's concern for Ben consumes her.

Dr. Song launches her pilot program, giving the E.D. a technological facelift. Archer clashes with Charles on a patient faking paralysis. Archer helps a pregnant mother with a heart condition.

Maggie clashes with Charles over a distrustful patient. Marcel and Halstead fight against Med's new policies. Asher and Archer pull surprising things out of their unsuspecting patients.

As Jack Dayton prepares to launch OR 2.0's IPO, Marcel and Grace search for data that may put a wrench in his plans. Charles helps a schizophrenic patient who is anxious about prom. Asher clashes with Abrams when his wife becomes her patient.

Marcel adjusts to his newfound fame when he helps Halstead treat a local restaurant owner. Choi, Charles and Goodwin aid a new mother worried about hurting her baby. Maggie and Taylor clash with a patient eager to get back to work.

The hospital is in disarray when the janitors go on strike. Marcel treats a young girl injured on her family's farm. Charles and Cuevas' schizophrenic patient returns to Med.

Charles and Cuevas clash over the treatment of a paranoid patient. Choi treats a pregnant patient from Asher's past. Marcel and Taylor help a man who needs a risky neurosurgery.

When a subway train goes off the tracks, Marcel volunteers to help the victims. Taylor and Halstead must decide if they’re willing to risk their jobs to save a patient. Asher and Archer clash over a pregnant patient.

Med runs out of scrubs, forcing the staff to improvise. The life of Archer’s son is in danger. Marcel and Charles help a kidney transplant patient experiencing psychosis. Asher and Halstead grow closer.

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.

Goodwin and Charles clash as negotiations drag on between the administration and the custodial workers' union. Asher fights to keep a mother and her newborn baby together.

A documentary crew visits Med to film Marcel and Abrams' groundbreaking surgery. Archer refuses to ask for help for his kidney issues despite the staff's unrelenting kindness.

Supply chain disruptions dramatically impact Med, causing Marcel to clash with other doctors. Maggie reveals something to Ben. Choi and Archer help a patient with ALS.

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 Marcel help victims of a hit-and-run accident. Halstead struggles to diagnose a patient with seizures. Asher and Archer clash with Jack Dayton.

The fate of the hospital rests on the vote of an incapacitated 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.

The effects of the supply chain shortages continue to impact the ED when Taylor's drug dealer reappears. One of the victims of the recent train crash needs a transplant.

In the aftermath of Halstead's apartment fire, Marcel, Choi and Archer work together to try to save the survivors. Charles and Med's new fellow, Cuevas, help a paranoid patient.