The libretto is very nice on the whole, in some parts even charmingly poetical and melodious.
The scene is laid in an Earldom on the Rhine.
The master-thief Wallfried, a young nobleman, who ten years before had been put into a convent as younger son, has fled from it, and has since then been the companion of roving minstrels and Bohemians. Having heard of his elder brother's death, he comes home to claim his rights. There he sees Waldmuthe, the only daughter of Count Berengar, the Seigneur of the Earldom. As her features are as sweet as her voice, and as the father guards his treasures better than his daughter, Wallfried falls in love with her, and after artfully robbing her of her necklace, he even steals a kiss from her rosy lips. At first she reproaches him, but at last willingly leaves her ornament in his hands, which he keeps as a token of seeing her again.
At a fair, where Wallfried for the last time makes merry with his companions and sings to them the song of the pretty Aennchen,—by the bye a pearl of elegance and delicacy,—he sees Count Berengar and his daughter, and at once reclaims his own name and castle as Heir von Sterneck from the Seigneur.—But Waldmuthe's companion, Hertha sees her mistress's chain on Wallfried's neck and as our hero will not tell how he came by it, he is considered a thief. His friend Marquard now pleads for him, intimating that he took the chain only to show his adroitness as a master-thief. Count Berengar hearing this, orders him to give three proofs of his skill. First he is to rob the Count of his dearest treasure, which is guarded by his soldiers and which then will be his own, secondly he is to steal the Count himself from his palace, and finally he must rob the Count of his own personality. Should he fail in one of these efforts, he is to be hanged.
These tests seem to be very difficult, but Wallfried promises to fulfill his task on the very same day.
In the second act Wallfried arrives with two friends at the Count's castle. All three are in pilgrim's garb and bring a beautiful wassail-horn to the Count in token of friendship from the Sire of Rodenstein. The sentry and the Count consider these pious guests harmless, and the Count, being a great amateur of good wine, drinks and sings with them and soon gets drunk. The roundelays are full of wit and humor and particularly Wallfried's song, with the charming imitation of the spinning-wheel in the orchestra, is of great effect.—At last one of the pilgrims intimates, that though the wine be good, they have drunk a far better at the clergyman's in the village. This seems incredible to the Count and he is willing to put it to the test. He goes with his guests out of his castle and so the second of his orders, to steal his own person, is already accomplished.
Wallfried however stays behind to rob the Count of his most valuable treasure, which he deems to be the young Countess herself. While the soldiers carefully guard the jewels and diamonds in the tower, Waldmuthe steps on her balcony and confides her love to the moon.—Wallfried, hearing her confession, easily persuades her to follow him, as she hopes thereby to save his life and so the first condition is likewise fulfilled.
In the third act the Bohemians (Wallfried's companions) have carried the Count into the forest, and having robbed him of his clothes, dress him in the clergyman's cassock. The Count, awaking from his inebriety, is quite confused. His misery after the debauch is most funnily and expressively depicted in the orchestration. His confusion increases, when the Bohemians, dressed as peasants, greet him as "Seigneur Pastor", and when even Benno, the warden of Sterneck calls him by this name,—for everybody is in the plot,—he storms and rages, but grows the more troubled. At last Wallfried makes his appearance in the mask of Count Berengar, speaking of his presumed daughter and of her love. Then the mists of the wine gather thicker around the Count's tortured brain, he repeats Wallfried's words and when alone says aloud "There goes Count Berengar, now I believe myself to be the pastor."—Thus too the third order is fulfilled; he is robbed of himself.
Waldmuthe, stealing up to him, roguishly laughing repeats the tests and now the Count at once becomes sober.—Of course he is in wrath at first and most unwilling to give his only child to one, who has passed part of his life with Bohemians. But Waldmuthe reminds him of his own youth, how audaciously he had won his wife, her mother, and how he had promised her to care for their daughter's happiness. The tender father cannot resist her touching and insinuating appeal, but resolves to try Wallfried's sincerity. When the latter reminds him, that he has only executed the Count's own orders, though in a somewhat different sense, Berengar willingly grants him the tide and domains of Sterneck, but refuses his daughter, telling him to choose instead his finest jewels. Wallfried haughtily turns from him to join his old comrades, and refuses name and heritage, which would be worthless to him without his bride. But the maiden is as noble as her lover; she rushes up to him, ready to brave her father's scorn as well as the world's dangers. Then the Count, persuaded of the young fellow's noble heart, folds him in his embrace and readily gives his benediction to the union.