On their first day as surgical attendings, Dr. Shaun Murphy and Dr. Alex Park are introduced to the first year residents they will be overseeing, Dr. Danica Powell and Dr. Daniel Perez,who make quite the first impression. Meanwhile, Lim returns to work while facing her new reality and the emotions surrounding the changes.

The team operates on a military reenactor whose attempt at authenticity has created an explosive predicament that even Dr. Shaun Murphy couldn’t predict. Meanwhile, Dr. Jordan Allen and Dr. Daniel Perez are on a race against time as they search for a severed foot.

Shaun, Asher and Powell treat a young patient on Halloween with a rare hereditary disease, sending them down an uncharted path. Meanwhile, Glassman and Shaun must overcome their differences to work together to try and find a solution for Lim’s paralysis.