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Alex Burroughs is a shy, insecure girl who, while helping her father with his catering business at a party, meets Janine Adams, the teen model of the time.Meanwhile, Janine is fed up with her mother Dierdre not being home when she has her first book signing, because her little brother Max is going on a publicity tour. Through a strange coincidence the two girls realize they look so much alike that they decide to swap places for a while. Alex gets to date Jason Sharp (Justin Timberlake), a young and gorgeous, but also sweet, model. However, she has to deal with Janine's domineering mother, Deirdre (Kathie Lee Gifford).

When they start their new life, they both end up with dates for Saturday. Even though they were supposed to change back Friday, they call each other up and extend the date. Janine warns Alex to stay away from Jason because she believes that he is using her for the attention. Meanwhile, Alex warns Janine to stay away from Eric Singer. Alex's little brother Josh tries to reveal her "Janine" secret. Towards the end when Janine wants to tell Eric that she is not Alex she is seen by Jason and he thinks she's cheating on him. Eric walks off on her as well. So Janine and Alex swap back the next morning. Alex is grounded but she goes to the ball and so does Janine, disguising herself as Alex. After both families show up, everyone finds out their secret.

• "Here We Go" sung by *NSYNC
• "Hello World" Performed by Belle Perez
• "Walking on Sunshine" Performed by Katrina & the Waves
• "Power to the Meek" Performed by Eurythmics
• "Let That Be Enough" Performed by Switchfoot
• "If You Wanna Dance" Performed by Nobody's Angel
• "Ooh La La La" Performed by Nobody's Angel
• "Wishing On You" Performed by Nobody's Angel
• "I Can't Help Myself" Performed by Nobody's Angel