Sophia lives in the city where she has a demanding job while she's living the single life with dating and parties. Her twin sister, Kaelynn, lives the suburban life with her two kids and a separated husband. They are both tired of their situations, and when Kaelynn's husband plans to bring the kids to Florida over Christmas, they decide to switch places as they often did when they were kids. Everything is fine from the start, but suddenly Sopia is surprised when the kids' trip to Florida is canceled, and they come back home at the same time as she meets a handsome firefighter in the small suburb. In town, Kaelynn tries to manage Sophia's job, social life, and strange roommate with some disastrous results.