In a world dominated by the Holy Britannian Empire, which ruthlessly subjugates nations like Japan, one student named Lelouch Lamperouge emerges as a beacon of resistance. After Japan's humiliating defeat in the Second Pacific War, rebranded as Area 11, Lelouch harbors a deep-seated grudge against Britannia. His encounter with the enigmatic C.C. grants him the power of Geass, compelling absolute obedience from those he commands. Taking on the persona of Zero, Lelouch becomes a symbol of rebellion, determined to liberate Japan and exact vengeance on the Empire that crushed his homeland.