Ep 1. Unrest

In A Certain Magical Index season 3 episode 1 titled "Unrest", the series picks up where it left off, following the events of season 2. The episode begins with Touma recovering from injuries he suffered during a confrontation with Accelerator, a member of the Level 5 esper. Meanwhile, the rest of the city is on edge as the hunt for fugitive magician Stiyl Magnus and his partner, the nun Index Librorum Prohibitorum, continues.

Touma heads back to school, where he meets up with his friends, including his classmate and occasional ally Misaka Mikoto, who has her own problems to deal with. She's been experiencing a strange feeling around the city, as if someone or something is watching her every move. On top of that, a new student named Shiage Hamazura has arrived at their school, and Touma catches him using an unusual device that seems to have some connection to the ongoing unrest.

Throughout the episode, tensions continue to rise as the hunt for Stiyl and Index intensifies. Touma and his friends must navigate through a web of lies and deceit to uncover the truth behind the growing turmoil in the city. Meanwhile, Stiyl and Index face their own set of challenges as they try to evade capture and unravel the mysteries surrounding the legendary sword, Excalibur.

The episode sets the stage for the rest of the season, introducing several new characters and storylines that promise to keep viewers engaged. It also raises important questions about the nature of magic and technology, and the potential consequences of their collision. Overall, "Unrest" is a thrilling and suspenseful episode that will leave fans eager to delve deeper into the world of A Certain Magical Index.