The film focuses on two teenage sisters who magically swap bodies after wishing on a shooting star.

Alexia and Hayley Wheaton are portrayed as sisters who live in the same house and attend the same high school.

Eighteen-year-old Alexia is popular, stylish, has a jock boyfriend, Kyle, and puts no effort into schoolwork.

Discovering they are unable to swap back, Hayley is content to fill her sister's role for the day, as she can now experience the glamour of Alexia's life firsthand.

Alexia gets upset when she sees a hickey on her old body, chipped her polished nails and realizes that "she" is back with Kyle.

When she awakens the next morning, she finds that they didn't switch back and believes that they will never be able to return to their bodies, but does not tell Alexia.

In tears, Alexia confesses that she was bored with her life and that she had been jealous of Hayley's intellect and well-structured future plans.

She reveals that on her first day as Hayley, she had discovered the daily bullying from their classmates that her sister and the other unpopular kids suffered through.

She mentions that she realized that her friends are shallow, that because of self-imposed rules she'd have to dump Kyle, and that she had no chance of getting into college due to her underachievement.

Wish Upon a Star was filmed at Hunter High School in West Valley City, Utah.

[3] The movie shares similar elements with many other films also featuring the Freaky Friday body swap trope.