Because the law stated that "Zero" would be exiled and the Britannians had agreed that anyone sharing his ideals was Zero, Suzaku is forced to legally exile all one million participants to avoid a repeat of the massacre caused by Princess Euphemia.
It is revealed that Sayoko Shinozaki was on the iceberg ship and now knows Lelouch's true identity as Zero.
The million "Zeros" board a massive iceberg ship provided by the Chinese Federation, successfully escaping Britannia's jurisdiction. Key Themes
Zero negotiates a secret deal with the Britannian leadership: he will deliver one million Elevens to the SAZ in exchange for his own legal pardon and exile from Area 11.