The members of the Sisterhood of the Traveling Pants graduate from high school and spend their last summer before college learning about life and themselves.
As their lives take them in different directions, Lena, Tibby, Carmen, and Bridget discover many more things about themselves and the importance of their relationship with each other.
Retells, in tall-tale fashion, how Levi Strauss went to California during the Gold Rush, saw the need for a sturdier kind of trouser, and invented jeans.
Jamie Kelly writes in her diary about her new jeans, which seemingly cause events that affect both her popularity and her efforts to get close to the eighth cutest boy in school, Hudson Rivers.