Pleasantly plump teenager Tracy Turnblad auditions to be on Baltimore's most popular dance show - The Corny Collins Show - and lands a prime spot. Through her newfound fame, she becomes determined to help her friends and end the racial segregation that has been a staple of the show.

When Berke Landers, a popular high school basketball star, gets dumped by his life-long girlfriend, Allison, he soon begins to lose it. But with the help of his best friend Felix's sister Kelly, he follows his ex into the school's spring musical. Thus ensues a love triangle loosely based upon Shakespeare's "A Midsummer Night's Dream", where Berke is only to find himself getting over Allison and beginning to fall for Kelly.