The story of Assassin's Creed is a sprawling saga that blends historical fiction with a sci-fi framing device. At its core, the series depicts a millenia-old war between two secret societies: the , who fight for individual freedom and free will, and the Templars , who believe humanity is too chaotic and must be controlled to maintain order. The Core Premise

In the present, the Templar-run corporation Abstergo Industries uses a device called the Animus to project a person's genetic memories. By reliving the lives of their ancestors, "modern-day" characters search for powerful artifacts known as Pieces of Eden .

The first five mainline games follow , a bartender who discovers he is the descendant of several master Assassins: The Complete ASSASSIN'S CREED Timeline Explained!

These artifacts are remnants of a highly advanced ancient species that created humanity. The Isu were wiped out by a global catastrophe, but left behind technology that can manipulate human minds or grant immense power. The Desmond Miles Saga (The Original Arc)

The narrative is split between the "Present Day" and "Historical Memories".