Because "Tante Zita" main theme is death: a twenty-year old girl, Annie (Shimkus) lives with her mother and her aunt (both played by first-class actresses Suzanne Flon and Katina Paxinou). The auntie is dying, and for the first time in her life, Annie has to cope with death. One night, she finds it too hard to bear, and leaving home where the old woman is suffering, she begins to hang around in Paris. She will meet people, and, from dusk to dawn, she will learn to leave her childhood behind and to grow into a woman.

Ayant fui l'Espagne en 1937, tante Zita vit ses derniers jours à Paris. Sa fille Annie, ne supportant plus ces nuits d'angoisse, fuit et erre dans Paris, multipliant les rencontres.