Vivian is disturbed by Mitchell Wilson's disrespectful comments towards Lucy Hernandez and the girls of Rock Eastport High.
Vivian arrives home and sees her mother's "Misspent Youth" box. She learns about her mother's rebellious past which awakens a new feeling inside of her.
After seeing her mother's "Misspent Youth" box, she becomes inspired and anonymously starts making magazines under the name of "Moxie" around East Rockport as a way for girls to protest against the boys and the school's sexist rules.
Although she hid her true identity, Vivian was able to connect with people that she never talked to through Moxie, including her boyfriend, Seth, who was the new student and was not like the other disrespectful boys in East Rockport High. She even met a new friend, Lucy, who strongly believed in feminism as well.
The administration threatened that the students who followed "Moxie's" issues were to be expelled. Despite the girls being afraid, they continued to riot against sexism within and out of the school.
Before the school year ended, Moxie, which was now run by any girl who fought for her rights, organized a walkout against sexual assault. The administration attempted to end the protest, but the girls made sure they were heard by posting pictures of the event and sending them to feminist blogs. The story ends with the sexist principal and his son, Mitchell Wilson, being kicked from the district, leaving the school to be more liberated.