In fact, the ancient plots in Assassin's Creed are all displayed by modern people entering Animus (friends familiar with the famous psychologist Jung are familiar with this name). Animus is a set of equipment developed by Abstergo, a subsidiary of the Knights Templar. Animus can read a person's genetic memory, and some ancient events can be reproduced through the synchronization of consciousness, so as to find these fragments of Eden.
The protagonist of Modern Line in the first five orthodox works of this series is Desmond, who belongs to the assassin camp. The fifth work "Assassin's Creed 3" (because the second part is a trilogy, the Brotherhood and the Revelation are not numbered), Desmond sacrificed himself to save mankind on 20 12, and saved human civilization at the expense of Juno's resurrection (there is a plot of an underground control center when playing the modern line with Black Flag). Finally, Desmond's body was recovered by the Templar and continued to study. The protagonist of Black Flag Modern Line is just an ordinary employee, ostensibly developing games for the company, but step by step, I found that the entertainment company where I work is not as simple as developing games.
The ancient line of the black flag is developed from the perspective of a man named Edward Kenway, who is the grandfather of Connor, the protagonist of three generations. He began to abandon his wife and daughter to travel alone in pursuit of wealth and change his life, and was involved in the war between the assassin and the Templar because he accidentally discovered a defected assassin. This is such a story.