The story, set in France between 1994 and 2008, follows , a high school student whose life changes the moment she sees a young woman with striking blue hair .
: While dating a boy named Thomas to feel "normal," Clémentine cannot shake the memory of Emma, the blue-haired girl.
: The narrative unfolds through Clémentine’s personal diaries, which Emma reads years later. It captures the raw struggle of a teenager navigating homophobia, parental rejection, and the intense passion of a first lesbian relationship.
: Scenes featuring Emma in the present day are rendered in full color, signifying the reality of life after Clémentine. Digital Access and Availability
: The color blue is the only vibrant hue in these flashbacks, appearing only on Emma’s hair or objects associated with her. This symbolizes how Emma brought "warmth" and color into Clémentine's grey world.