Nate Santana

A storm in Chicago causes a power outage that puts many patients at risk, pushing the staff and med students to their limits.

After a major accident at O'Hare, the ED is concerned one of their own is in mortal danger. Will's proposal for a safe injection site goes to the board for consideration. Meanwhile, Natalie and Goodwin become concerned for Gwen.

The staff adjusts to the new normal of the pandemic; Dr. Choi, Dr. Lanik and April fight on the front lines; Dr. Halstead and Hannah face a troubling reality; Dr. Charles tries to clear the air with his daughter following recent developments.

Dr. Manning's actions with a recent patient lead to serious repercussions. April and Noah disagree over a patient who is injured after a beating, and Dr. Charles is visited by a childhood friend with a surprising revelation.

April receives unfortunate news that makes her question her future with Ethan. Dr. Charles and Maggie see tough times on the horizon, and Natalie's memory from the accident starts to return.

One of the doctors' own is rushed into surgery following an assault. Meanwhile, Maggie breaks protocol to support a friend.