A science lesson with a computer turns into a romance machine disaster for Jana Morgan, the envy of every girl in the sixth grade.

Taffy Sinclair is sending secret admirer notes to Jana Morgan to get her in trouble, but Jana and her friends cook up a plot to put Taffy in her place.

Jana finds a wallet but decides to return it to where she found it - that's when Taffy sees her and blackmails her into becoming her personal slave.

Taffy has just landed the role in the TV movie about a beautiful girl whose life at school is made miserable by friends who despise her.

Jana and her four sixth-grade friends are out to give gorgeous Taffy Sinclair a little competition. But their attempt ends in disaster and Jana finds she has four new enemies.

Telling Taffy's version of the story about her rivalry with The Fabulous Five, the ninth Taffy Sinclair title opens during the last week of school at Mark Twain Elementary. When Taffy's diary is removed from her locker, the whole sixth grade learns the truth about her.

Having made a TV movie in Hollywood, Taffy Sinclair comes back to Wakeman Junior High. But life seems pretty ordinary after the movie set, and Taffy can't help feeling different. Then she learns that the TV movie will become a prime-time series and the producer wants her to play the star.