<P> Tracy becomes one of Corny's most popular performers, threatening Amber's chances of winning the show's yearly "Miss Teenage Hairspray" pageant and her relationship with Link, as he grows fonder of Tracy . Mr. Pinky suggests that Tracy should be the spokesgirl for his Hefty Hideaway boutique . Tracy persuades her agoraphobic mother, Edna, to accompany her to the boutique as her agent . </P> <P> Tracy introduces Seaweed to Penny, and the two are smitten . Later, when Tracy and Link are in detention, Seaweed invites the girls and Link to follow him and his sister, Little Inez, to a party at Maybelle's store . Edna finds Tracy there and tries taking her home, but Maybelle convinces her to stay, and tells her to take pride in herself . At the party, Maybelle informs everyone that Velma has canceled "Negro Day", and Tracy suggests that they march for integration . Edna returns to her husband Wilbur's shop, but Velma gets there first, and tries to seduce him . After accusing Wilbur of infidelity, Edna forbids Tracy to be on the show . She changes her mind after she and Wilbur reconcile . </P> <P> The next morning, Tracy sneaks out of the house to join the protest, which is halted by a police roadblock . The protesters engage in a brawl, while Tracy runs to the Pingletons' home, and hides in a fallout shelter . However, Penny's mother, Prudence, reports Tracy to the police before tying her daughter to her bed . Having been bailed out by Wilbur, Seaweed and his friends help Tracy and Penny escape . Link visits Tracy's house to look for her, and realizes that he loves her . Seaweed and Penny also acknowledge their love during the escape . </P> <P> With the pageant underway, Velma places police officers around WYZT to prevent Tracy from entering . She also changes the pageant tallies, so Amber is guaranteed to win . Penny arrives at the pageant with Edna, while Wilbur, Seaweed, and the Negro Day kids help Tracy infiltrate the studio . Link breaks away from Amber to dance with Tracy; later, he pulls Seaweed's sister, Little Inez, to the stage to dance in the pageant . </P>

What is the plot of the movie hairspray