This comic opera was created at the Foire Saint-Germain by actors from three different companies – Dolet’s, La Place’s and Restier’s. Francisque played Arlequin. The entire play is performed and sung by actors, but the Endriague, a sort of gigantic crocodile who feeds on young female virgins, is played by a giant puppet carried and handled by four men. Jean-Philippe Rameau composed the music for the sung parts. It was the first time he composed for a theatre play.

The Docteur (Doctor) and Marinette are castaways on an island, where they pretend to be mute and have been asked to guard Grazinde – a virgin girl who must be sacrificed to a monster called Endriague. Elfridérigelpot – the son of the sacrificer Caudaguliventer – lets them flee because he wants to keep Grazinde for himself. But he cannot save her in the end: the genius Popocambechatabalipa holds Grazinde prisoner in the Endriague’s stomach. The Genius turns the indigenous population to stone as a punishment for doing such sacrifices. A new castaway, Arlequin, tries to revive them, without success. The Génie (Genie) tasks him with fetching Espadavantellados the knight, who will free Grazinde and break the spell. The Endriague appears and swallows Arlequin, but he manages to escape. At Arlequin’s request, the spell is removed from Scaramouche, who was turned to stone, and Scaramouche roams the town. With the help of Arlequin, Espadavantellados the knight fights the Endriague and frees Grazinde. The islanders are revived, but in order to fully break the spell, the knight must touch the part where their hand was at the time they were petrified.