WATCH " FREAKY FRIDAY" TRAILER HERE

Psychologist Dr. Tess Coleman and her daughter, rocker chick Anna, are facing some problems in their relationship. After losing her husband, Tess decides to get remarried and gets engaged to her fiancé, Ryan. Her wedding rehearsal is planned on a Friday; however, this turns out to be the same day that Anna's band's, Pink Slip's, audition at the House of Blues is scheduled on. Anna tells her mother about the audition at a dinner at the House of Chang, a Chinese restaurant. Tess refuses to allow Anna to go to the audition due to the fact that both the rehearsal and the audition are set for the same date. They argue hotly until Pei-Pei's mother arrives with two Chinese fortune cookies. After taking the fortune cookies and fighting more, Anna storms off into the bathroom, which she locks. Locked out, Tess opens the fortune cookie; Anna does the same. They read the fortune together, which Anna replies to with, "Whatever." An earthquake suddenly occurs immediately after the reading of the fortune, and Anna and Tess go back to their table. Apparently, no one else felt the earthquake but Anna and Tess.

At midnight, Anna and Tess switch bodies. The next morning, Anna discovers that she was in her mother's body and that Tess was in her daughter's body. They decide to be each other for the day until lunchtime, when they plan on going to House of Chang and switching back to their original bodies. This attempt turns out to be futile, as Pei-Pei explains that she "cannot fix it." She goes on to say that they must switch back themselves. Anna and Tess decide to be each other until the end of the day. The rest of the day includes a series of different scenarios, including Tess's taking Anna's placement test (she ends up being sabotaged by Stacey Kinkhouse, Anna's nemesis), Anna's being on a daytime TV talk show (she is carried by the audience toward the end), and Anna's attending Harry's teacher-parent conference (where she finds out Harry, despite how annoying he can be, genuinely cares for and loves his sister). Jake, Anna's crush with the Ducati motorcycle, falls for Anna, whom he thinks is Tess. While preparing for the wedding rehearsal, Tess talks to Anna about Anna's antagonism against Ryan; it is implied that Anna is hostile because Ryan is not her biological father. They go to the wedding rehearsal, where Anna's bandmates plan to capture Tess and take her along to the audition. Their plan is foiled, as they are caught by security guards. Anna says what she thinks Ryan thinks of their band ("it's just a stupid rock band"), but Ryan allows the bandmates and Tess to go the audition. Ryan then tells Anna that the marriage will not work if Tess thinks he is an insensitive stepfather. Ryan tells Anna to go to the audition, saying that she should be cheering the band on. Anna sees Ryan in a completely new light here and kisses Ryan on the cheek before she leaves.

At the audition, Tess cannot play the guitar at all - she attempts to play it, but she only ends up making feedback noises. Anna meets Tess backstage, says that she has unplugged Tess's guitar, and tells her to play like Keith Richards. In the end, Anna plugs her own guitar and plays for Tess backstage. Jake sees Tess (in Anna's body) and falls for her. The band makes the audition, partly in due to the guitar solo, which the audience was emphatic about. Tess and Anna go back to the rehearsal. Tess tells Anna here to postpone the wedding, saying that she "wasn't thinking what was best for [Anna] and Harry." Anna proposes a toast, saying that although no one can replace her father, someone can be a part of their family. At this moment, Anna and Tess switch back. The following day, Tess gets married to Ryan, and Jake arrives, dances with, and kisses Anna (implying that they are or will become in a relationship).

Harry and his grandfather are sitting at a table. His grandfather says that youth is wasted on the young, to which Harry replies with, "you old fart." Pei-Pei's mother sees this and comes to their table with two fortune cookies. Pei-Pei realizes the mischief her mother is conniving, and she tackles Harry and his grandfather, taking the fortune cookies in the process.

The movie ends with Anna's singing the song "Ulitmate."