Well-to-do middle-aged Hungarian couple travels to Switzerland to meet a princess they're hoping to raise money for early acquaintance with Jusztinia. Despite Jusztinia's nicely ringing name, she's a simple cleaning lady who didn't get much good so far in her life, connected to the couple only by cleaning their flat. She has an extremely simple life living in a one-bed rooftop flat in a block where she is selling her working abilities, but now she feels her time has arrived.