Schneizel cones on a diplomatic mission to the black knights.
While Lelouch has a breakdown, he tells the Knights about Zero's identity, and about geass. He has a dossier of people who have been geassed.
The Knights feel betrayed. They agree to trade Zero for Japan.
Rolo helps Lelouch escape. But it turns out that his geass has a fatal flaw. When he stops time, it stops his own heart.
He uses it so many times trying to get away that he dies.
Lelouch has lost everything now.
Nunnaly, C.C., Rolo, the Black Knights.
Only revenge remains.