Exploring how Andromache became immortal and her early experiences as one of the oldest immortals. 

Delving into Booker's past and the events that led to his exile from the group. 

Showing Nile's journey as a new immortal and her training with the team. 

Revealing what happened to Quynh after her imprisonment and her eventual reunion with Andy. 

Highlighting significant missions or battles that the team undertook throughout history, such as wars, revolutions, or influential events. 

Providing individual stories for each member of the team, showcasing their unique personalities, abilities, and struggles. 

Introducing new antagonists or challenges that the immortals must face in the modern world. 

Exploring the dynamics of trust and betrayal within the group, as well as potential alliances with other immortals or factions. 

"The Old Guard 2: Twelve Stories." Therefore, any details about such a movie would be speculative.  

However, based on your mention of "12 stories," it's possible that you're referring to the potential exploration of the backgrounds and past adventures of the immortal characters in the sequel.

In "The Old Guard," we are introduced to a group of immortal mercenaries led by Andy (Andromache of Scythia), played by Charlize Theron.