list for Bounty

I'm just going to use bits of a Wikepedia post to help.

Plot
Code Geass is set in an alternate universe where the Holy Empire of Britannia, an international superpower, has conquered more than a third of the planet. The world is, for the most part, divided between it and two other superpowers: the Chinese Federation and the Euro Universe. Australia has remained independent of the other powers though it is not significantly mentioned in the story. The three powers maintain a tentative balance for the first part of the series. The balance shifts in the second season. The E.U. has much of its territory conquered by Britannia while Lelouch engineers a revolution in the Chinese Federation and creates a new alliance of countries, the United Federation of Nations, reducing the number of superpowers to two.
On August 10, 2010, a.t.b. (the Imperial calendar), the Holy Empire of Britannia overpowered Japanese forces and conquered the country with their new robotic weapons, the Knightmare Frames, in less than a month. In the aftermath of Britannia's invasion, Japan lost its freedom, its rights, and even its name, becoming Area 11 of the Britannian Empire. The Japanese people, renamed as "Elevens", are forced to survive in poor neighborhoods, while Britannians live in first-class settlements. Rebel elements persist, however, as pockets of Japanese organizations struggle against the Empire for the independence of Japan.

After his father, the Emperor of Britannia, failed to prevent the assassination of his mother, an attack which also left his sister blind and crippled, the young prince Lelouch vowed to destroy Britannia. Seven years later, he accidentally becomes mixed up with "terrorists" in Area 11 and encounters a mysterious girl named C.C., who gives him the power of Geass. With it, he finally has the power that he needs to defeat Britannia and fulfill his two wishes: to seek revenge for his mother and to construct a world in which his beloved sister can live happily.

Japan, renamed as Area 11 under Britannian rule, is the source of over 70% of the world's total supply of sakuradite, a fictional superconductive mineral. Japan oppressed and dominated other countries through economic control of the mineral prior to the start of the series, leading to its invasion and eventual takeover by Britannia. Japan serves as the main setting for much of the series, as it is where Ashford Academy, Lelouch's school, is located. Under his alter-ego of Zero, Lelouch attempts to reform it as an independent nation, the "United State of Japan", as part of his quest to overthrow Britannia.

Geass (ギアス, giasu?) is a mysterious ability which certain people can bestow upon others. The form the Geass takes is different in each individual. C.C. calls Geass the Power of Kings (王の力, Ō no Chikara?). It is represented by a bird-shaped symbol which glows red when active.

Every Geass has its own unique set of restrictions, limitations, or idiosyncrasies. These factors allow a Geass to be defeated, or its power limited, by someone who is aware of its characteristics. Geass abilities in the manga spin-off Knightmare of Nunnally have no such limitations.