Place it at the peak of the edit, just after the Keyboard Typing Sound Effect has built up the thinking scene, then cut straight to the Illuminati Confirmed Sound once the plan is revealed, so the sequence moves from working it out to claiming it was genius all along.
About this sound
This 16-second burst of loud, fast music imagines a brain switching into overdrive, with a spinning, driving rhythm that keeps building. It feels funny and overconfident, like a sudden flash of genius that is too much for one moment. It comes from Russian-language meme edits riffing on Megamind, the blue-headed animated supervillain whose head became shorthand for an overworking brain, with 1000 grams joking that brainpower can be weighed.