It's been a year since the "Black Rebellion," an uprising led by the "Black Knights." Tokyo Settlements, the location of the final battle, was starting to recover.
Lelouch Lamperouge was a normal student at Ashford Private Academy, spending his days running away from the P.E. teacher, Ms. Villetta.
One day, Lelouch goes to Babel Tower with his brother Rolo to play gambling chess. Above the tower is an aircraft approaching, one with C.C. and Urabe leading the Black Knights to carry out a mission.