To be candid, expectations for Basim’s character were not particularly high based on his appearances in Valhalla. His storyline in that game was a convoluted mix of Norse Gods and high sci-fi concepts related to the Isu, the pre-human civilization in the Assassin’s Creed lore. However, Mirage takes a different approach.
The game keeps the Isu narrative to a minimum, focusing on Basim as the central character. In Mirage, Basim emerges as a young man struggling through life as a street thief. His journey leads him to an investigation for the Hidden Ones (the early Assassin Brotherhood) and a quest to discover his true identity.