As a plot twist, the concept of reversing roles, or undergoing major and unexpected transformations, is hardly new. Tom Hanks’s breakthrough role was in Big, the 1988 film in which he played a little boy who wished he could be an adult, only to wake up the next day in the body of a grown man (the role won Hanks an Academy Award nomination for Best Actor). The same theme was used in 13 Going on 30 with Jennifer Garner as the teenage girl who made the leap in age. Then of course there was the 2003 movie Freaky Friday, in which Jamie Lee Curtis and Lindsay Lohan played a mother and daughter with a difficult relationship who one day find themselves having traded bodies and lives.