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.

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, 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.

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.

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.

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.

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.

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.

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.

Ripley and Charles treat a patient with OCD. Asher and Archer encounter a woman with a foreign object lodged in her heart. Marcel clashes with the chief of oncology.

Archer, Asher and Charles encounter an expecting father who claims he's telepathic and receiving messages from his yet-to-be born son. Ahmad works to thaw out a frozen criminal.

Ripley and Charles treat members of a cult. Ahmad's suspension takes an unexpected toll on Marcel. Abrams' 5-month-old son lands in the E.D. under questionable circumstances.

Ripley and Charles treat a high-risk prisoner who may have dementia. Archer and Sean clash when a resident from Margo's facility lands in the E.D. Marcel receives shocking news.