Will and Stevie get stuck in the middle of a marital face-off. Dr. Blake's entire surgical team mysteriously collapses during a liver transplant. Charles encourages Ethan to reconcile with his father.

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.

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.

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.

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.

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.

When the E.D. is flooded with patients from a crash, the entire team is pulled in to help. Charles can't shake the feeling that he knows the new E.D. attending. Archer has second thoughts on the eve of his kidney transplant.

A woman from Archer's past returns and threatens his transplant surgery. Marcel clashes with Med's new eager first-year resident. Charles works to repair his relationship with Ripley.