https://www.gamespot.com/articles/e3-2018-skull-and-bones-new-trailer-depicts-the-go/1100-6459701/

Skull & Bones isn't Ubisoft's first dip into piracy, as Assassin's Creed IV Blag Flag depicted the end of piracy's golden age. At E3 2018, a new trailer for Skull & Bones suggested Ubisoft's upcoming game would cover both the start and height of the age.

The trailer's narrator describes how piracy came to be. In an age where empires ruled, men and women who sought liberty escaped to the freedom that the open sea afforded. The trailer goes on to show how pirate captains adopted the black flag as their symbol, rose in power and infamy, and ultimately went their separate ways as they began to betray one another. However, in the face of powerful threats, the pirate captains realize they must unite in order to survive.