Laurel (Zoe Kazan) has always been the odd wallflower, choosing to live at home with her father, while her glamorous identical twin, Audrey (Kazan), possesses the confidence and appeal to succeed in the big city. When tragedy strikes and Laurel is mistaken for her twin sister, she makes the impulsive decision to assume her sister's identity and become the pretty one. As she eases into her new, independent existence, Laurel discovers that she's capable of accomplishments she had never before had dreamed of: excelling in a career, maintaining friendships and even finding love.