'Shaun and Lea's upcoming engagement party has everyone in a festive mood; a young single mother learns her son may have contracted his cancer from a surprising source; Mateo finds out if his previous issues in America will be resolved.

'Dr. Shaun Murphy and the team race to save a pregnant woman's baby and find her current situation as a convicted felon complicates it even more than they realize. Meanwhile, the hospital takes on some unexpected changes that the staff are not prepared for.

Salen’s new guidelines create roadblocks for two patients who require expensive surgeries. An unexpected invitation by Shaun leaves Lea struggling with their wedding plans.

Salen insists that a father's internet research be factored into his daughter's medical care. A dying woman asks to reconnect with her estranged son.

Dr. Park and Dr. Murphy treat an elderly Asian man brought to St. Bonaventure by his daughter after being the victim of a hate crime; Lea goes behind Shaun's back to help raise his negative patient satisfaction scores.

Shaun insists on trying to save a critically-injured man whose heart could be donated to Park's nine-year-old patient. Morgan looks to convince Salen that she's the right choice to take over Glassman's clinic.

Shaun and Lea happen upon a terrible car accident and discover a young pregnant mother who has been badly injured and needs immediate medical attention; Dr. Glassman is apprehensive when a figure from his past reaches out for help.

Now that Shaun has called off the wedding, he is forced to confront Lea about their relationship and determine what he really means to her. Meanwhile, the team debates their opinions on plastic surgery, and Lim hopes to expose Salen's cover-up over an infant's death to take her down before it is too late.

In an effort to please Salen, Andrews takes on a high-profile case and assigns Shaun and Allen to help perform a risky surgery to restore the voice of a famous pop star. In addition, Reznick and Park treat a man whose 17-year-old son is confined to a wheelchair due to complications related to Kabuki Syndrome.

Salen takes extreme measures when she learns that the surgical staff have joined Lim's efforts against her; the team treats a liver transplant patient whose organ donor unwittingly gave him cancer.

Dr. Shaun Murphy makes a personal connection with a precoious young patient which threatens his objectivity. Meanwhile, while volunteering at a long-term care facility, Dr. Morgan Reznick realizes she could help Dr. Aaron Glassman's clinic by offering telemedicine services for nursing homes and care facilities.

As a woman's lung ailment exposes unexpected problems for her and her fiancé, a college professor must overcome an embarrassing medical condition so that she can achieve an important life goal.

Shaun sides with a teenager whose biohacking has threatened the use of his arm. Morgan struggles to get approval to treat a patient's depression with a radical brain surgery.

After the surgical staff is felled by mysterious hallucinations during a team potluck, Shaun and Glassman butt heads when they try to pick up the slack.

Lea calls on her experience fixing old cars to repair a patient’s aging iron lung. Andrews uses his own past to help a dyslexic abuse victim, while Jordan balks at Glassman’s suggestions about raising money for her new medical device.

Shaun uncovers a mistake that forces him to perform a second painful surgery on a burn victim. Park tries to help a seriously injured firefighter return to duty.

As Shaun and Lea look for a wedding theme they can agree on, the staff mobilizes to perform a trio of risky operations on a ten-year-old Guatemalan boy.

Shaun and Lea make a big life decision and are pleasantly surprised by the support they receive from their friends at the hospital; Asher struggles to accept that he and his father may never truly understand one another.