This story is set in the "in-between" time of a girl's life, when she is no longer a child and not yet a woman. We open with our heroine, Maeve, putting on her new snow white bra, and stepping out into the world as a young woman. She has an obsession with breasts and bras and can't help but stare at other girls and women, even the head nun doesn't escape her gaze. Otherwise, her world revolves around her three friends, Ruth, Claire and Orla, who are more experienced in the ways of the world. They wear bras already (except Claire the feminist) and they've all had boyfriends. The new bra is a start but they really hope Maeve can find a fella, even offering kissing lessons to prepare her. What no one expects, least of all Maeve, is that she should snare the local sixteen-year old heartthrob. Maeve is so smitten with him that she lets her friends down when they need her the most...

A Dublin en 1979, Maeve est sur le point de fêter ses 14 ans. L'adolescente est consciente qu'elle atteint là une étape importante de sa vie et de sa féminité. Maeve est fascinée par Brian, un beau garçon de 16 ans qu'elle parvient à séduire. Mais lorsque celui-ci la quitte, Maeve se heurte à l'hostilité de ses trois meilleures amies, Ruth, Claire et Orla, qui lui reprochent de les avoir délaissées...

13岁少女马艾芙的世界都和她的三个好朋友路特，克莱尔和奥拉在一块儿。她们三个都有了男朋友。当马艾芙对16岁的同乡一见倾心时，她终于开始放下朋友，只在她们最需要她的时候才出现……