On Carol Kenney's first day at work, she's prepped with an abundance of life experience, people skills, talent and enthusiasm, advantages the chief resident and other newly minted interns don't have. Carol's first-year partners on rounds are Lexie, who's very nervous due to the pressure on her to succeed as the first in her family to go to college, and Daniel, a 2018 Harvard Medical school grad who's already published in the New England Journal of Medicine twice. Carol will need to win over their chief resident, Dr. Maya Jacobs, an all-business disciplinarian who doesn't care for Carol's chatty, outgoing nature. At age 50, Carol is a medical intern who must sink or swim with peers who are half her age, and it's her enthusiasm, perspective and yes, even her age, that may be exactly what will make her second act a great success.