The film stars Zoe Kazan, Jake Johnson, Ron Livingston, Sterling Beaumon and John Carroll Lynch.

Although they look the same on the outside, their personalities are very different, with Audrey being popular, sophisticated and successful while Laurel is shy, childlike, awkward and still living at home with their widowed father (John Carroll Lynch) and his new fiancée, and helping him with his work of reproducing famous paintings.

Returning from the hair salon, they get in a severe car crash together, and when Laurel wakes up in the hospital, she is informed that her sister has died.

While posing as her sister, she learns that Audrey had a married boyfriend, Charles (Ron Livingston), but broke up with him before the accident.

After talking to Claudia, and receiving encouragement from her father after showing him her original paintings, Laurel eventually comes to terms with her own insecurities about being the less worthy sister.

[6] Later on 22 June, Ron Livingston joined the cast to play Charles, Robin Schorr and Steven Berger produced the film.