It's possible that Britannia's wars of conquest are actually to capture these artifacts.
Meanwhile, Euphemia has figured out that Zero is Lelouch. The four lost people reconvene and are brought to Prince Schneizel by accidentally activating the artifact.
Zero and Kallen steal a prototype flying Knightmare and escape.
Suzaku is arrested for mutiny. Lelouch had used his geass on him to force him to choose to live rather than throw his life away.