Mireille Havet, born in 1898, meets early success through her poems. Being close to Apollinaire and Cocteau, she makes a name for herself in the literary sphere of the time. Simultaneously with her poems and her novel published in 1923, she writes a diary, started when she was still a teenager. Driven by this success, the young woman is gradually caught up by her two great passions: women and drugs. It results in a turbulence against which she will struggle to attempt to produce the great work she dreamed of. Over the years, she finally resigned and will focus on her diary. It became the only reconcilable medium with her lifestyle, her melancholy and extremely increasing drug addiction. She then tries to transcribe her soul into her diary, "to say and reveal [her] world" inside. This project, even if it is not the ideal fantasized work, yet contains all the poetry of Mireille Havet, and forms, after rereading, a "complete whole" almost unknown to the author herself. Can this journal then replace the failed masterpiece the diarist always dreamed of?