Desert Oath: The Official Prequel to Assassin’s Creed Origins

Before Assassin's Creed Origins, there was an Oath.
Egypt, 70BC, a merciless killer stalks the land. His mission: to find and destroy the last members of an ancient order, the Medjay - to eradicate the bloodline.
In peaceful Siwa, the town's protector abruptly departs, leaving his teenage son, Bayek, with questions about his own future and a sense of purpose he knows he must fulfill. Bayek sets off in search of answers, his journey taking him along the Nile and through an Egypt in turmoil, facing the dangers and the mysteries of the Medjay's path.