Carol starts her first day as an internal medicine intern with enthusiasm until she ignores orders to help a patient and gets into trouble.
Carol must find a way to help an old woman whose test results are not reassuring and keep her in the hospital for a longer period.
The interns fight over who will get a patient with a rare disease, while Carol's patient turns out to be more interesting than expected.
Marathon day means a hectic day for doctors. Meanwhile, Carol gets a chance to prove herself to Dr. Jacobs.
Carol experiences her first time being the only doctor on duty for the night, which entails various challenges.
As a college football student comes to the hospital with an injury, he discovers that he has a serious health problem.
Carol uses her experience as a working mother as she tries to help interns balance their personal and professional lives.
Carol's friend, Phyllis, is hospitalized, and Carol becomes jealous of not experiencing what retirement would be like for her.
To help patients recover, the hospital gets therapy dogs.
With Jenny busy with her secret date with Daniel, Carol seeks to throw an early Christmas party for her.
In order to admit her patient into intensive care, Carol is forced to pretend to be an attending doctor.
As the interns are evaluated by Dr. Frost and Dr. Jacobs, everyone takes it well, but Carol doesn't.
When Lexie and Jenny find out that Carol's neighbor might have a crush on her, they start to tease her.
Lexie has a secret hobby, which Carol discovers, and she also finds out a bigger secret that everyone knows apart from her.
The case of a patient who needs a liver donation angers Carol, while Daniel, Caleb and Lexie seek to find out the secret behind Dr. Jacobs' tattoo.
After the success of the operation of Carol's patient, she becomes annoyed by everyone's harassment due to her apparent crush on Dr. Lewis.
The interns taunt Carol about her relationship with Dr. Lewis developing too quickly, while Jacobs, Lexie, and Caleb help a patient with an unusual case before her wedding.
As Carol is chosen to give a presentation about a case in front of the hospital, Dr. Lewis asks her not to accept.