Bianca, a Corsican, supports her frivolous sister, Rosa, by making laces. The sculptor, Manatelli, visits her cottage to buy laces, and sees her modeling in clay. Impressed by her talent, he offers her free instruction if she wishes to come to Paris. Bianca accepts and promises to send for Rose as soon as possible. In Paris she meets Etienne Du Inette, head of the Internationale, a powerful secret service organization. He and Bianca are instantly attracted to each other. Jules Lavinne, also in the service of the Internationale, goes to Corsica on a secret mission. He sees and desires Rosa. One day a mysterious veiled woman slips a note under Etienne's door, warning him to go to Corsica and watch Lavinne, who is a traitor. He soon has occasion to protect Rosa from Lavinne. Lavinne learns the assumed name Etienne is using on the island and signs it to a note asking Rosa to meet him. In Paris, Bianca finishes and exhibits her first piece of work, and it is purchased by a wealthy patron.