Ep 3. The Document of C

As the third season of A Certain Magical Index continues, episode 3, titled "The Document of C," introduces viewers to a new mystery that involves the Church of England and a powerful magical artifact known as the Document of C.

The episode starts off with a flashback scene taking place six years prior to the current events in the show, where a young girl named Carissa, who is now working for the Church of England, is tasked with finding the Document of C. Her search leads her to a hidden location where she discovers the artifact and uses it to gain immense power.

Returning back to the present day, the episode focuses on Kamijou Touma, a high school student with an unusual ability to nullify supernatural powers with his right hand. After having a brief encounter with the now-grown Carissa, Touma begins to investigate the Church of England's involvement with the Document of C, as he suspects that they may be using it for nefarious purposes.

Along the way, Touma teams up with his friend, Index, a girl with vast knowledge of magical texts, and a group of British magicians called Necessarius, who are sworn to protect the Church. With their help, Touma discovers that the Document of C possesses the power to rewrite reality itself, and that the Church may be using it to manipulate the events of the world to their advantage.

As the episode progresses, Touma and his allies race against time to uncover the truth behind the Church's motives and stop them from using the artifact's power to launch a devastating attack on their enemies. But with powerful forces working against them, including Carissa, who has her own reasons for getting involved, the group must face difficult challenges and make difficult choices to achieve their goal.

Overall, "The Document of C" is an intense and action-packed episode that offers a deeper look into the world of A Certain Magical Index and the complex web of alliances and rivalries between its many factions. With its compelling storyline and well-developed characters, the episode is a must-watch for fans of the series and newcomers alike.