A teenager discovers the first stirrings of love. Her daily life unfolds in a stairwell. It is there that she leaves her boyfriend before going home; it is also there that she meets her girlfriend. It is there that the powerful emotions of her young life play out.
| Actor | Role |
|---|---|
 Nina MeurisseRachel | Rachel |
 Clément Van Den BerghHervé | Hervé |
 SokoBéa | Béa |
 Camille JapyHilary | Hilary |
 Marie CollinsOlivia | Olivia |
| AAmandine MaudetSophie | Sophie |
| MMorgane FrançoisGisèle | Gisèle |
| BBernieYvan | Yvan |
 César MéricFlorent | Florent |
| GGilles de VerdièreZach | Zach |
| VValérie BérangerIsabelle | Isabelle |
| TTibault PenvenDidier | Didier |
| BBenoît PenvenJean | Jean |