Mary-Kate and Ashley thought that going to see the New York City Ballet would be fun, but when the star ballerina's diamond tiara is stolen, the girls find themselves trying to solve the mystery before the show is ruined.
When Joey volunteers to be the new coach for Michelle's baseball team, she worries that he is not serious enough to do the job, but Coach Joey turns out to be no fun at all and the girls on the Sparrows are ready to revolt.
Michelle gets a letter that says she has won ten thousand dollars and goes on a spending spree with borrowed money she intends to pay back when she receives her prize. By the time she realizes she has been duped, Michelle owes a lot of people and must find a way to repay them.
