The two meet after a ten-year separation in this castle so dear to their hearts, where they grew up, played, and have been loved.
Camille confides that she has done everything to make Perdican hate her, and that he is now in despair because of her marriage refusal.
During a quarrel between Dame Pluche and Blazius, Perdican accidentally finds Camille's letter.
But Camille learns from Dame Pluche that Perdican has read the letter, and is able to divine his plan.
In the last scene Camille and Perdican finally confess their for each other love, while Rosette, watching them in secret, cannot bear the pain of disillusionment and dies of emotion: "She is dead.