Overview
Freaky Friday is a comedic children's novel written by Mary Rodgers, first published by Harper & Row in 1972. It has been adapted for several films, including versions in 1976, 1995, 2003, and 2018.
The story features a day in the life of 13-year-old Annabel Andrews and her mother, who spend the day in each other's bodies. It may be considered a modern retelling of Vice Versa: A Lesson to Fathers, an 1882 novel by F. Anstey in which the protagonists are a father and son.
Plot
A willful, disorganized teenage girl, Annabel Andrews, awakens one Friday morning to find herself in the body of her mother, with whom she had argued the previous night.
Annabel suddenly finds herself in charge of the New York family's affairs and must now take care of her younger brother Ben (whom Annabel has not-so-affectionately nicknamed "Ape Face" and described as "so neat, it's revolting!"). She grows increasingly worried about the disappearance of "Annabel," who appeared to be herself in the morning but has gone missing after leaving the Andrews' home, and she enlists the help of her neighbor and childhood friend, Boris, though without telling him about her identity crisis.
From Wikipedia (CC BY-SA 4.0).