Section 31 introduces a new leader for Starfleet's secret intelligence organization, but their name makes no sense after Discovery.

Section 31? For our answer, we’ll have to dig into decades of behind-the-scenes intrigue and centuries of Star Trek continuity.

Section 31. Almost all of the main characters of Star Trek: Section 31 have special abilities of some kind. Section 31 centers on Michelle Yeoh's return as Philippa Georgiou, who debuted in Star Trek: Discovery as the ruthless Emperor of the Mirror Universe's Terran Empire.