影片分成四个小片段，讲述了持有不同价值观和生活方式的两个女孩的友情。单纯、热情的蕾妮特（若埃勒·米凯尔 Joëlle Miquel 饰）是一个乡下女孩，慵懒、阴暗的米拉贝（杰西卡·福德 Jessica Forde 饰）则来自巴黎城里。第一段故事名为“蓝色时光”，讲述了她 们的相遇。米拉贝骑车去乡下游玩，结果自行车坏了，乡下姑娘蕾妮特帮她修好了自行车。两个女孩互相产生好感，交谈甚欢，决定一起去巴黎上大学。第二段故事发生在一个咖啡馆中。蕾妮特被侍应误认为女骗子，对她处处刁难，米拉贝到来之后帮她解围，两人对待此事有着截然不同的解决办法。第三段故事中，她们对社会边缘人乞丐、小偷、骗子进行了不同观点的讨论。最后一段故事中，她们打了一个赌：蕾妮特能否坚持一天不说话。结果，蕾妮特假装成哑巴少女，米拉贝成功地将她的画卖给一个艺术品经销商。Reinette and Mirabelle are two young girls. Reinette lives in the countryside, Mirabelle in Paris. They meet during a holiday of Mirabelle in the country, when Reinette helps her to repair the tube of her bicycle and shows her the beauties of nature and in particular the 'blue hour'. They like each other and decide to take a flat together in Paris, where they'll attend at the University. But isn't so easy to live together when the characters are so different: as Reinette is simple and enthusiastic, as Mirabelle is obscure and lazy.