Isabelle and Polly walk. They walk by the river. They visit a studio. The studio is small. Monsieur Dupont is there. He is an artist. He paints Paris. The painting is gone. The easel is empty. Dupont is sad. He says, "It was here." He went for a walk. Now it is gone. Polly wants to help. Isabelle wants to help too. They look outside. They see a boy. The boy looks around. Polly sees the boy. Isabelle talks to him. She asks, "Did you see something?" The boy nods. He says, "A man took it." The man wears black. He goes to the bridge. Isabelle thanks the boy. Polly thanks him too. They go to the bridge. They want to find the painting.