After Act 3

In this chapterBayek and Amunet establish the Hidden Ones' first tenet: do not harm innocents.

In Sinai, Bayek and Aya help a rebellion against Rome and kill General Rufio, an Order member. Bayek executes the rebel leader Gamilat for sacrificing civilians, which leads Bayek and Amunet to set the Hidden Ones' first rule against harming innocents.

In Thebes, Bayek investigates a curse that brought dead pharaohs back, defeats them and confronts Isidora, who used a Piece of Eden to avenge her mother. He entrusts the Piece to Sutekh. The expansions show Bayek as a teacher and as a man who has learned to carry his grief.

The expansions give the Hidden Ones their moral code. The first tenet comes not from theory but from a hard choice. Rufio's words are a warning: the Order's ideology survives its members, which is why the series continues for centuries. The Curse of the Pharaohs shows how a Piece of Eden can turn grief into destruction, mirroring Bayek's own loss.

The Curse of the Pharaohs plays with Egyptian mythology and adds the realms of Aaru and Aten as places Bayek must enter. Gamilat's execution is the first hard test of the Hidden Ones' principle, and it makes Bayek question his own methods.

In this chapterAbstergo researcher Layla Hassan finds Bayek's mummy in Egypt and secretly extracts his DNA to use in an Animus.

Layla, who works for Abstergo, finds Bayek's remains and uses an Animus to relive his life, later adding Aya's. Her work reveals First Civilization structures and a role she may have in preventing an apocalypse. William Miles invites her to join the Assassins. She refuses to join but agrees to travel to Alexandria with him.

Layla acts as a new protagonist for the modern story after Desmond, a researcher who wants answers more than a side. The modern-day frame turns Bayek's story into history that matters to the present.