The Resident - Season 4 (2021)

The staff works to diagnose a mother and daughter with a mysterious illness. Devon deals with a surprise visit from his mother. Mina makes a surprise proposal.

Chastain is being dismantled, Doctors and surgeons are transferring and patients are panicking. Nic and Conrad announce they're going to be parents when another tragedy strikes.

The hospital now a public hospital tries to adjust to the changes. When one of the surgeons who is scheduled to perform an important surgery decides to quit because of his pay reduction, they try to find another. Bell asks his step son to do it. And Nic who is still recuperating is visited by her friend a former nurse practitioner who was let go because she performed an unauthorized surgery and who has a tense relationship with Conrad. When something happens to Nic her friend offers to help and Conrad is not sure if she should. Meanwhile, the hospital looks for a new ...

When Conrad gets a call from his former army commander who is stranded and wounded in the forest, the trip to save him brings lots of old emotions to the surface. Devon and Kit treat a patient who suffers from sickle cell anemia and encourage her to have a hip replacement to help treat her pain. Meanwhile, The Raptor is pulled away in the middle of an intense surgery, Mina is left to put her skills and finish the surgery on her own and Bell works on reconnecting with his stepson (guest star Conrad Ricamora) after helping him get hired at the hospital.

On Nic's first day back at Chastain, the man who attacked her is admitted to the ER, causing her to confront her trauma head-on. Cain, now in recovery, is self-conscious of his physical state and sets his eye on taking down Mina. Meanwhile, new intern Leela, both struggles and shines throughout her first day, causing Devon and Conrad to wonder if something bigger is going on.

Conrad and Bell treats the woman carrying Jake's future baby. Devon contemplates his love life. Mina receives a call that causes her to make a bold decision about her future.

Just when Mina and The Raptor can see their future together, an unexpected complication throws a wrench in their plans. Meanwhile, Cain faces a harsh reality when Kit gives him the opportunity to prove he is ready to return to the OR. Then, Devon presents Rose with a groundbreaking clinical trial that could help her battle with Sickle Cell Anemia.

When a tornado touches down in Atlanta with Chastain directly in its path, the entire staff goes into crisis mode. Conrad and Nic work on an injured EMT and Devon and Leela become trapped with a man who has severe head trauma, causing them to operate with limited medical supplies. Meanwhile, Bell pulls The Raptor and Dr. Wong onto a case involving a young cancer patient in need of a very risky surgery and Cain gets assigned a new resident.

With Nic's due date steadily approaching, she and Conrad plan a relaxing day off, but their plans are interrupted when a patient with a medical mystery sends them rushing back to Chastain. Devon stays by Rose's side as she starts her clinical trial and things take a turn for the worse. Meanwhile, Kit is under pressure to bring Chastain out of debt.

On the day of Nic's baby shower, Billie takes full control to make sure it goes smoothly, but a secret she's been hiding changes everything. Devon and Leela stumble upon an apartment fire, where they assist in getting victims safely to Chastain and Leela gets a chance to prove her skills to Raptor. Meanwhile, Jake and his husband deal with the complications of Sammie's health, as they prepare to become more permanent fixtures in her life, and both Raptor and Rose receive exciting news.

The wait is over as Conrad and Nic welcome the arrival of their baby girl. Meanwhile, Raptor's life begins to fall apart and he is forced to turn to Cain for help. Also, Devon and Bell work together on a complicated surgery that may allow them to save multiple lives. Then, Kit tries to deal with the moral repercussions of financially saving Chastain.