In this dialogue, Sophie and the Big Friendly Giant (BFG) engage in a sophisticated orchestration of reality through the medium of dreams. The BFG describes his collection as "billions of dreams on my shelves," noting that these dreams are "getting very lonesome" and that they "likes being mixed" much like ingredients for a cake. Sophie identifies a unique opportunity to use this power to influence the highest authority in the land: the Queen of England.
Sophie’s plan is to craft a specific, terrifying dream to be blown into the Queen’s bedroom. The narrative content of this dream is meticulously designed to create a sense of urgent reality. Sophie instructs the BFG to include the specific names of the "disgusting giants"—such as "Flesh lump eater," "man hugger," "bone cruncher," and "child chewer." The dream is engineered to depict these creatures "snatching little boys and girls from their beds," where they are "popping them straight into their mouths like popcorn."
The genius of Sophie’s plan lies in the intersection of the dream and the physical world. By incorporating the detail that the Queen will see "a little girl called Sophie sitting on her windowsill" upon waking, Sophie transforms a "horrid dream" into a "dream come true." The BFG initially expresses hesitation, questioning, "How is I going to get on the queen's windowsill?" but Sophie reassures him that the proof of her presence will lead the Queen to believe the "rest of the dream too," specifically the existence of the BFG himself.
Despite the BFG’s fear of being "shooted at by her soldiers," Sophie leverages the moral weight of the situation. She insists that they must act immediately because "if we can't save tonight's children, we can at least save tomorrow's." The BFG worries about the nature of the dream, noting it is a "fearful nightmare" that looks like a "jellyfish" with "tinges of bright scarlet." However, Sophie justifies this cruelty as a necessary sacrifice: "If having a nightmare is going to save a lot of human beings from being gobbled up by filthsome giants," then it is the right course of action.
The dialogue concludes with the BFG accepting the mission, moving from a state of reluctance to a "flush-bunking flurry" of activity. By successfully navigating the "witching hour" and the logistics of the palace garden, the pair intends to transform the BFG from a creature who eats "snozzcumbers" into a hero. This interaction serves as a testament to the power of narrative control—how a carefully constructed fiction can be used to manipulate reality to prevent the consumption of innocent lives by the "filthsome giants."