This romantic comedy follows Roger Fleuriot, a shy librarian, who is secretly in love with Princess Saint Labiche, but hesitates to express his feelings due to their different social standings. The princess reciprocates his affection but is restricted by her royal duties.
To overcome these obstacles, the princess creates a false identity as Roger's "twin sister," working at a shoe shop. She hopes to get closer to him and understand his world.
As they spend more time together, Roger and the princess form a genuine bond filled with humor and shared moments. However, the deception can't last, leaving the audience to question whether their love can prevail against societal pressures and class differences.
