Libretto of the opera "Proserpine," by Philippe Quinolt; the plot is based on the story of the abduction of Proserpine and her descent into Hades, and also on Ovid's Metamorphoses, its original source. In the plot, Cerés, the goddess of the earth, summons the nymph Aréthuse to guard her daughter Proserpine. Aréthuse protests, and tells Cerés of her love for Alphée, the river god, but the anxious mother warns her she should not let her own feelings interfere with the assigned task. Alphée assumes that Aréthuse abandoned him to look after Proserpine. Taking advantage of the situation, Ascalaphe, Pluto's envoy, encourages Alphée's belief in Aréthuse's supposed infidelity; then, persuades both Alphée and Aréthuse into letting Pluto watch over Proserpine. Alphée and Aréthuse agree and as the lovers' attention wanders, Pluto seizes Proserpine and abducts her. Cerés learns of her daughter's abduction and in despair decides to withhold her gifts that give earth prosperity. When Alphée and Aréthuse finally reach Proserpine, they find that she has already eaten of the grain and tasted the fruit of the underworld, which condemned her to Pluto's control. Proserpine begs Pluto for mercy, but the love-stricken god refuses to free her. Pluto summons his judges …